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31055464 = 23111720759
BaseRepresentation
bin111011001110…
…1111001101000
32011102210002101
41312131321220
530422233324
63025343144
7524652466
oct166357150
964383071
1031055464
1116591480
12a497ab4
13658451b
1441a5836
152ad6944
hex1d9de68

31055464 has 32 divisors (see below), whose sum is σ = 67262400. Its totient is φ = 13285120.

The previous prime is 31055449. The next prime is 31055467. The reversal of 31055464 is 46455013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31055467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8884 + ... + 11875.

It is an arithmetic number, because the mean of its divisors is an integer number (2101950).

Almost surely, 231055464 is an apocalyptic number.

31055464 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31055464 is an abundant number, since it is smaller than the sum of its proper divisors (36206936).

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

31055464 is a wasteful number, since it uses less digits than its factorization.

31055464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20793 (or 20789 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 31055464 is about 5572.7429511866. The cubic root of 31055464 is about 314.3253015069.

The spelling of 31055464 in words is "thirty-one million, fifty-five thousand, four hundred sixty-four".

Divisors: 1 2 4 8 11 17 22 34 44 68 88 136 187 374 748 1496 20759 41518 83036 166072 228349 352903 456698 705806 913396 1411612 1826792 2823224 3881933 7763866 15527732 31055464