38644506 has 16 divisors (see below), whose sum is σ = 85876800. Its totient is φ = 12881484.

The previous prime is 38644477. The next prime is 38644511. The reversal of 38644506 is 60544683.

38644506 is a `hidden beast` number, since 3 + 8 + 644 + 5 + 0 + 6 = 666.

38644506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357766 + ... + 357873.

It is an arithmetic number, because the mean of its divisors is an integer number (5367300).

Almost surely, 2^38644506 is an apocalyptic number.

38644506 is an abundant number, since it is smaller than the sum of its proper divisors (47232294).

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

38644506 is a wasteful number, since it uses less digits than its factorization.

38644506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715650 (or 715644 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 38644506 is about 6216.4705420359. The cubic root of 38644506 is about 338.0876084423.

The spelling of 38644506 in words is "thirty-eight million, six hundred forty-four thousand, five hundred six".