40866624 has 42 divisors (see below), whose sum is σ = 117138450. Its totient is φ = 13622016.

The previous prime is 40866613. The next prime is 40866647. The reversal of 40866624 is 42666804.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 38044224 + 2822400 = 6168^2 + 1680^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 34899 + ... + 36050.

Almost surely, 2^40866624 is an apocalyptic number.

It is an amenable number.

40866624 is an abundant number, since it is smaller than the sum of its proper divisors (76271826).

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

40866624 is a wasteful number, since it uses less digits than its factorization.

40866624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70967 (or 70954 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 40866624 is about 6392.7008376742. The cubic root of 40866624 is about 344.4474077519.

The spelling of 40866624 in words is "forty million, eight hundred sixty-six thousand, six hundred twenty-four".