40565900 has 18 divisors (see below), whose sum is σ = 88028220. Its totient is φ = 16226320.

The previous prime is 40565897. The next prime is 40565911. The reversal of 40565900 is 956504.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202730 + ... + 202929.

Almost surely, 2^40565900 is an apocalyptic number.

It is an amenable number.

40565900 is an abundant number, since it is smaller than the sum of its proper divisors (47462320).

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

40565900 is a wasteful number, since it uses less digits than its factorization.

40565900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405673 (or 405666 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 40565900 is about 6369.1365191837. The cubic root of 40565900 is about 343.6004352096.

The spelling of 40565900 in words is "forty million, five hundred sixty-five thousand, nine hundred".