40634636 has 12 divisors (see below), whose sum is σ = 81269328. Its totient is φ = 17414832.

The previous prime is 40634617. The next prime is 40634651. The reversal of 40634636 is 63643604.

40634636 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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, 725591 + ... + 725646.

It is an arithmetic number, because the mean of its divisors is an integer number (6772444).

Almost surely, 2^40634636 is an apocalyptic number.

It is an amenable number.

40634636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40634636 is a wasteful number, since it uses less digits than its factorization.

40634636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451248 (or 1451246 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 40634636 is about 6374.5302572033. The cubic root of 40634636 is about 343.7943944426.

The spelling of 40634636 in words is "forty million, six hundred thirty-four thousand, six hundred thirty-six".