40564400 has 30 divisors (see below), whose sum is σ = 97456932. Its totient is φ = 16225600.

The previous prime is 40564379. The next prime is 40564409. The reversal of 40564400 is 446504.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40564409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50306 + ... + 51105.

Almost surely, 2^40564400 is an apocalyptic number.

40564400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40564400 is an abundant number, since it is smaller than the sum of its proper divisors (56892532).

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

40564400 is a wasteful number, since it uses less digits than its factorization.

40564400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101429 (or 101418 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40564400 is about 6369.0187627295. The cubic root of 40564400 is about 343.5962000679.

The spelling of 40564400 in words is "forty million, five hundred sixty-four thousand, four hundred".