40563688 has 16 divisors (see below), whose sum is σ = 82971360. Its totient is φ = 18438000.

The previous prime is 40563661. The next prime is 40563703. The reversal of 40563688 is 88636504.

It is a super-2 number, since 2×40563688² = 3290825568322688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40563688.

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, 230388 + ... + 230563.

It is an arithmetic number, because the mean of its divisors is an integer number (5185710).

Almost surely, 2^40563688 is an apocalyptic number.

It is an amenable number.

40563688 is an abundant number, since it is smaller than the sum of its proper divisors (42407672).

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

40563688 is a wasteful number, since it uses less digits than its factorization.

40563688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460968 (or 460964 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 40563688 is about 6368.9628669038. The cubic root of 40563688 is about 343.5941897508.

It can be divided in two parts, 4056 and 3688, that added together give a square (7744 = 88²).

The spelling of 40563688 in words is "forty million, five hundred sixty-three thousand, six hundred eighty-eight".