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30983952 = 243645499
BaseRepresentation
bin111011000110…
…0011100010000
32011022010222210
41312030130100
530412441302
63024032120
7524234136
oct166143420
964263883
1030983952
111654277a
12a462640
13655aacc
144187756
152ac066c
hex1d8c710

30983952 has 20 divisors (see below), whose sum is σ = 80042000. Its totient is φ = 10327968.

The previous prime is 30983947. The next prime is 30983957. The reversal of 30983952 is 25938903.

It is an interprime number because it is at equal distance from previous prime (30983947) and next prime (30983957).

It is a self number, because there is not a number n which added to its sum of digits gives 30983952.

It is not an unprimeable number, because it can be changed into a prime (30983957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322702 + ... + 322797.

It is an arithmetic number, because the mean of its divisors is an integer number (4002100).

Almost surely, 230983952 is an apocalyptic number.

It is an amenable number.

30983952 is an abundant number, since it is smaller than the sum of its proper divisors (49058048).

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

30983952 is a wasteful number, since it uses less digits than its factorization.

30983952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645510 (or 645504 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 30983952 is about 5566.3230233252. The cubic root of 30983952 is about 314.0838484882.

The spelling of 30983952 in words is "thirty million, nine hundred eighty-three thousand, nine hundred fifty-two".

Divisors: 1 2 3 4 6 8 12 16 24 48 645499 1290998 1936497 2581996 3872994 5163992 7745988 10327984 15491976 30983952