52640408 has 8 divisors (see below), whose sum is σ = 98700780. Its totient is φ = 26320200.

The previous prime is 52640389. The next prime is 52640417. The reversal of 52640408 is 80404625.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3290018 + ... + 3290033.

Almost surely, 2^52640408 is an apocalyptic number.

It is an amenable number.

52640408 is a deficient number, since it is larger than the sum of its proper divisors (46060372).

52640408 is a wasteful number, since it uses less digits than its factorization.

52640408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6580057 (or 6580053 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 52640408 is about 7255.3709760425. The cubic root of 52640408 is about 374.7771309787. Note that the first 3 decimals are identical.

The spelling of 52640408 in words is "fifty-two million, six hundred forty thousand, four hundred eight".