40537656 has 48 divisors (see below), whose sum is σ = 116251200. Its totient is φ = 12717312.

The previous prime is 40537619. The next prime is 40537711. The reversal of 40537656 is 65673504.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40537656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15336 + ... + 17783.

It is an arithmetic number, because the mean of its divisors is an integer number (2421900).

Almost surely, 2^40537656 is an apocalyptic number.

It is an amenable number.

40537656 is an abundant number, since it is smaller than the sum of its proper divisors (75713544).

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

40537656 is a wasteful number, since it uses less digits than its factorization.

40537656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33148 (or 33141 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 40537656 is about 6366.9188780760. The cubic root of 40537656 is about 343.5206727831.

The spelling of 40537656 in words is "forty million, five hundred thirty-seven thousand, six hundred fifty-six".