40564784 has 20 divisors (see below), whose sum is σ = 84640416. Its totient is φ = 18722112.

The previous prime is 40564763. The next prime is 40564793. The reversal of 40564784 is 48746504.

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, 97304 + ... + 97719.

Almost surely, 2^40564784 is an apocalyptic number.

It is an amenable number.

40564784 is an abundant number, since it is smaller than the sum of its proper divisors (44075632).

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

40564784 is a wasteful number, since it uses less digits than its factorization.

40564784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195044 (or 195038 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 38.

The square root of 40564784 is about 6369.0489085891. The cubic root of 40564784 is about 343.5972842742.

The spelling of 40564784 in words is "forty million, five hundred sixty-four thousand, seven hundred eighty-four".