40644152 has 16 divisors (see below), whose sum is σ = 76443000. Its totient is φ = 20259360.

The previous prime is 40644139. The next prime is 40644169. The reversal of 40644152 is 25144604.

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, 5027 + ... + 10322.

Almost surely, 2^40644152 is an apocalyptic number.

It is an amenable number.

40644152 is a deficient number, since it is larger than the sum of its proper divisors (35798848).

40644152 is a wasteful number, since it uses less digits than its factorization.

40644152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15686 (or 15682 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 40644152 is about 6375.2766214495. The cubic root of 40644152 is about 343.8212294487.

Adding to 40644152 its reverse (25144604), we get a palindrome (65788756).

The spelling of 40644152 in words is "forty million, six hundred forty-four thousand, one hundred fifty-two".