40631928 has 32 divisors (see below), whose sum is σ = 102037200. Its totient is φ = 13483008.

The previous prime is 40631909. The next prime is 40631933. The reversal of 40631928 is 82913604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1800 + ... + 9192.

Almost surely, 2^40631928 is an apocalyptic number.

It is an amenable number.

40631928 is an abundant number, since it is smaller than the sum of its proper divisors (61405272).

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

40631928 is a wasteful number, since it uses less digits than its factorization.

40631928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7631 (or 7627 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 40631928 is about 6374.3178458561. The cubic root of 40631928 is about 343.7867571493.

The spelling of 40631928 in words is "forty million, six hundred thirty-one thousand, nine hundred twenty-eight".