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30231168 = 2731117421
BaseRepresentation
bin111001101010…
…0101010000000
32002212220100220
41303110222000
530214344133
62555543040
7514650342
oct163245200
962786326
1030231168
1116079140
12a15aa80
136356286
14402d292
1529c25b3
hex1cd4a80

30231168 has 128 divisors (see below), whose sum is σ = 92975040. Its totient is φ = 8601600.

The previous prime is 30231133. The next prime is 30231181. The reversal of 30231168 is 86113203.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 71598 + ... + 72018.

Almost surely, 230231168 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 30231168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46487520).

30231168 is an abundant number, since it is smaller than the sum of its proper divisors (62743872).

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

30231168 is a wasteful number, since it uses less digits than its factorization.

30231168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 30231168 is about 5498.2877334676. The cubic root of 30231168 is about 311.5193123986.

The spelling of 30231168 in words is "thirty million, two hundred thirty-one thousand, one hundred sixty-eight".

Divisors: 1 2 3 4 6 8 11 12 16 17 22 24 32 33 34 44 48 51 64 66 68 88 96 102 128 132 136 176 187 192 204 264 272 352 374 384 408 421 528 544 561 704 748 816 842 1056 1088 1122 1263 1408 1496 1632 1684 2112 2176 2244 2526 2992 3264 3368 4224 4488 4631 5052 5984 6528 6736 7157 8976 9262 10104 11968 13472 13893 14314 17952 18524 20208 21471 23936 26944 27786 28628 35904 37048 40416 42942 53888 55572 57256 71808 74096 78727 80832 85884 111144 114512 148192 157454 161664 171768 222288 229024 236181 296384 314908 343536 444576 458048 472362 592768 629816 687072 889152 916096 944724 1259632 1374144 1778304 1889448 2519264 2748288 3778896 5038528 7557792 10077056 15115584 30231168