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30986952 = 233892163
BaseRepresentation
bin111011000110…
…1001011001000
32011022022002220
41312031023020
530413040302
63024054040
7524245653
oct166151310
964268086
1030986952
1116544a57
12a464320
13655c299
14418889a
152ac14bc
hex1d8d2c8

30986952 has 48 divisors (see below), whose sum is σ = 78828240. Its totient is φ = 10150272.

The previous prime is 30986947. The next prime is 30986981. The reversal of 30986952 is 25968903.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190023 + ... + 190185.

It is an arithmetic number, because the mean of its divisors is an integer number (1642255).

Almost surely, 230986952 is an apocalyptic number.

It is an amenable number.

30986952 is an abundant number, since it is smaller than the sum of its proper divisors (47841288).

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

30986952 is a wasteful number, since it uses less digits than its factorization.

30986952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 30986952 is about 5566.5924945158. The cubic root of 30986952 is about 314.0939851457.

The spelling of 30986952 in words is "thirty million, nine hundred eighty-six thousand, nine hundred fifty-two".

Divisors: 1 2 3 4 6 8 12 24 89 163 178 267 326 356 489 534 652 712 978 1068 1304 1956 2136 3912 7921 14507 15842 23763 29014 31684 43521 47526 58028 63368 87042 95052 116056 174084 190104 348168 1291123 2582246 3873369 5164492 7746738 10328984 15493476 30986952