40623636 has 12 divisors (see below), whose sum is σ = 94788512. Its totient is φ = 13541208.

The previous prime is 40623607. The next prime is 40623643. The reversal of 40623636 is 63632604.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 1692640 + ... + 1692663.

Almost surely, 2^40623636 is an apocalyptic number.

It is an amenable number.

40623636 is an abundant number, since it is smaller than the sum of its proper divisors (54164876).

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

40623636 is a wasteful number, since it uses less digits than its factorization.

40623636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385310 (or 3385308 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 30.

The square root of 40623636 is about 6373.6673901295. The cubic root of 40623636 is about 343.7633693533.

It can be divided in two parts, 406 and 23636, that added together give a palindrome (24042).

The spelling of 40623636 in words is "forty million, six hundred twenty-three thousand, six hundred thirty-six".