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30370944 = 273139569
BaseRepresentation
bin111001111011…
…0110010000000
32010011000002210
41303312302000
530233332234
63002542120
7516102012
oct163666200
963130083
1030370944
111616415a
12a207940
1363a4a96
1440681b2
1529edbe9
hex1cf6c80

30370944 has 64 divisors (see below), whose sum is σ = 81396000. Its totient is φ = 10033152.

The previous prime is 30370939. The next prime is 30371023. The reversal of 30370944 is 44907303.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×303709442 = 1844788478902272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53092 + ... + 53660.

Almost surely, 230370944 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 30370944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40698000).

30370944 is an abundant number, since it is smaller than the sum of its proper divisors (51025056).

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

30370944 is a wasteful number, since it uses less digits than its factorization.

30370944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 713 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 30370944 is about 5510.9839411851. The cubic root of 30370944 is about 311.9986850701.

The spelling of 30370944 in words is "thirty million, three hundred seventy thousand, nine hundred forty-four".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 64 96 128 139 192 278 384 417 556 569 834 1112 1138 1668 1707 2224 2276 3336 3414 4448 4552 6672 6828 8896 9104 13344 13656 17792 18208 26688 27312 36416 53376 54624 72832 79091 109248 158182 218496 237273 316364 474546 632728 949092 1265456 1898184 2530912 3796368 5061824 7592736 10123648 15185472 30370944