40564988 has 24 divisors (see below), whose sum is σ = 73605504. Its totient is φ = 19540800.

The previous prime is 40564967. The next prime is 40564991. The reversal of 40564988 is 88946504.

It is a happy number.

It is a congruent number.

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, 33758 + ... + 34938.

It is an arithmetic number, because the mean of its divisors is an integer number (3066896).

Almost surely, 2^40564988 is an apocalyptic number.

It is an amenable number.

40564988 is a deficient number, since it is larger than the sum of its proper divisors (33040516).

40564988 is a wasteful number, since it uses less digits than its factorization.

40564988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 40564988 is about 6369.0649235190. The cubic root of 40564988 is about 343.5978602559.

The spelling of 40564988 in words is "forty million, five hundred sixty-four thousand, nine hundred eighty-eight".