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30870952 = 2371673301
BaseRepresentation
bin111010111000…
…0110110101000
32011002101222121
41311300312220
530400332302
63021401024
7523253530
oct165606650
964071877
1030870952
1116475892
12a409174
13651b548
1441584c0
152a9be37
hex1d70da8

30870952 has 32 divisors (see below), whose sum is σ = 66568320. Its totient is φ = 13147200.

The previous prime is 30870901. The next prime is 30870967. The reversal of 30870952 is 25907803.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7702 + ... + 11002.

It is an arithmetic number, because the mean of its divisors is an integer number (2080260).

Almost surely, 230870952 is an apocalyptic number.

It is an amenable number.

30870952 is an abundant number, since it is smaller than the sum of its proper divisors (35697368).

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

30870952 is a wasteful number, since it uses less digits than its factorization.

30870952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3481 (or 3477 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 30870952 is about 5556.1634245224. The cubic root of 30870952 is about 313.7015569404.

The spelling of 30870952 in words is "thirty million, eight hundred seventy thousand, nine hundred fifty-two".

Divisors: 1 2 4 7 8 14 28 56 167 334 668 1169 1336 2338 3301 4676 6602 9352 13204 23107 26408 46214 92428 184856 551267 1102534 2205068 3858869 4410136 7717738 15435476 30870952