40423972 has 24 divisors (see below), whose sum is σ = 74088000. Its totient is φ = 19262496.

The previous prime is 40423967. The next prime is 40423993. The reversal of 40423972 is 27932404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31479 + ... + 32737.

It is an arithmetic number, because the mean of its divisors is an integer number (3087000).

Almost surely, 2^40423972 is an apocalyptic number.

It is an amenable number.

40423972 is a deficient number, since it is larger than the sum of its proper divisors (33664028).

40423972 is a wasteful number, since it uses less digits than its factorization.

40423972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635 (or 1633 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 40423972 is about 6357.9849008943. The cubic root of 40423972 is about 343.1992484448.

The spelling of 40423972 in words is "forty million, four hundred twenty-three thousand, nine hundred seventy-two".