36638444 has 12 divisors (see below), whose sum is σ = 64186584. Its totient is φ = 18299424.

The previous prime is 36638443. The next prime is 36638447. The reversal of 36638444 is 44483663.

It is a super-2 number, since 2×36638444² = 2684751157482272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 36638398 and 36638407.

It is not an unprimeable number, because it can be changed into a prime (36638443) 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, 302 + ... + 8565.

It is an arithmetic number, because the mean of its divisors is an integer number (5348882).

Almost surely, 2^36638444 is an apocalyptic number.

It is an amenable number.

36638444 is a deficient number, since it is larger than the sum of its proper divisors (27548140).

36638444 is a wasteful number, since it uses less digits than its factorization.

36638444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9904 (or 9902 counting only the distinct ones).

The product of its digits is 165888, while the sum is 38.

The square root of 36638444 is about 6052.9698495862. The cubic root of 36638444 is about 332.1332387263.

The spelling of 36638444 in words is "thirty-six million, six hundred thirty-eight thousand, four hundred forty-four".