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30371328 = 2933133
BaseRepresentation
bin111001111011…
…0111000000000
32010011000122000
41303312320000
530233340303
63002544000
7516103101
oct163667000
963130560
1030371328
1116164479
12a208000
1363a5000
1440683a8
1529edda3
hex1cf6e00

30371328 has 160 divisors (see below), whose sum is σ = 97389600. Its totient is φ = 9345024.

The previous prime is 30371311. The next prime is 30371377. The reversal of 30371328 is 82317303.

The cubic root of 30371328 is 312.

It is a perfect power (a cube), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2336250 + ... + 2336262.

It is an arithmetic number, because the mean of its divisors is an integer number (608685).

Almost surely, 230371328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30371328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48694800).

30371328 is an abundant number, since it is smaller than the sum of its proper divisors (67018272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30371328 is an frugal number, since it uses more digits than its factorization.

30371328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66 (or 18 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 30371328 is about 5511.0187805886.

Multiplying 30371328 by its sum of digits (27), we get a cube (820025856 = 9363).

30371328 divided by its sum of digits (27) gives a cube (1124864 = 1043).

It can be divided in two parts, 303 and 71328, that added together give a triangular number (71631 = T378).

The spelling of 30371328 in words is "thirty million, three hundred seventy-one thousand, three hundred twenty-eight".

Divisors: 1 2 3 4 6 8 9 12 13 16 18 24 26 27 32 36 39 48 52 54 64 72 78 96 104 108 117 128 144 156 169 192 208 216 234 256 288 312 338 351 384 416 432 468 507 512 576 624 676 702 768 832 864 936 1014 1152 1248 1352 1404 1521 1536 1664 1728 1872 2028 2197 2304 2496 2704 2808 3042 3328 3456 3744 4056 4394 4563 4608 4992 5408 5616 6084 6591 6656 6912 7488 8112 8788 9126 9984 10816 11232 12168 13182 13824 14976 16224 17576 18252 19773 19968 21632 22464 24336 26364 29952 32448 35152 36504 39546 43264 44928 48672 52728 59319 59904 64896 70304 73008 79092 86528 89856 97344 105456 118638 129792 140608 146016 158184 179712 194688 210912 237276 259584 281216 292032 316368 389376 421824 474552 562432 584064 632736 778752 843648 949104 1124864 1168128 1265472 1687296 1898208 2336256 2530944 3374592 3796416 5061888 7592832 10123776 15185664 30371328