40656828 has 12 divisors (see below), whose sum is σ = 94865960. Its totient is φ = 13552272.

The previous prime is 40656823. The next prime is 40656829. The reversal of 40656828 is 82865604.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40656823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1694023 + ... + 1694046.

Almost surely, 2^40656828 is an apocalyptic number.

It is an amenable number.

40656828 is an abundant number, since it is smaller than the sum of its proper divisors (54209132).

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

40656828 is a wasteful number, since it uses less digits than its factorization.

40656828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388076 (or 3388074 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 40656828 is about 6376.2706968886. The cubic root of 40656828 is about 343.8569691118.

The spelling of 40656828 in words is "forty million, six hundred fifty-six thousand, eight hundred twenty-eight".