40731912 has 48 divisors (see below), whose sum is σ = 118804140. Its totient is φ = 12532608.

The previous prime is 40731893. The next prime is 40731937. The reversal of 40731912 is 21913704.

It can be written as a sum of positive squares in 2 ways, for example, as 28579716 + 12152196 = 5346^2 + 3486^2 .

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, 20823 + ... + 22694.

Almost surely, 2^40731912 is an apocalyptic number.

It is an amenable number.

40731912 is an abundant number, since it is smaller than the sum of its proper divisors (78072228).

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

40731912 is a wasteful number, since it uses less digits than its factorization.

40731912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43542 (or 43535 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 40731912 is about 6382.1557486479. The cubic root of 40731912 is about 344.0685143863.

The spelling of 40731912 in words is "forty million, seven hundred thirty-one thousand, nine hundred twelve".