40631968 has 24 divisors (see below), whose sum is σ = 86148468. Its totient is φ = 18753024.

The previous prime is 40631959. The next prime is 40631993. The reversal of 40631968 is 86913604.

It can be written as a sum of positive squares in 2 ways, for example, as 40602384 + 29584 = 6372^2 + 172^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48421 + ... + 49252.

Almost surely, 2^40631968 is an apocalyptic number.

It is an amenable number.

40631968 is an abundant number, since it is smaller than the sum of its proper divisors (45516500).

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

40631968 is a wasteful number, since it uses less digits than its factorization.

40631968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97696 (or 97688 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 40631968 is about 6374.3209834460. The cubic root of 40631968 is about 343.7868699626.

The spelling of 40631968 in words is "forty million, six hundred thirty-one thousand, nine hundred sixty-eight".