18388796 has 12 divisors (see below), whose sum is σ = 32493552. Its totient is φ = 9104928.

The previous prime is 18388793. The next prime is 18388807. The reversal of 18388796 is 69788381.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18388793) 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, 21905 + ... + 22728.

It is an arithmetic number, because the mean of its divisors is an integer number (2707796).

Almost surely, 2^18388796 is an apocalyptic number.

It is an amenable number.

18388796 is a deficient number, since it is larger than the sum of its proper divisors (14104756).

18388796 is a wasteful number, since it uses less digits than its factorization.

18388796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44740 (or 44738 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 18388796 is about 4288.2159460550. The cubic root of 18388796 is about 263.9476288830.

The spelling of 18388796 in words is "eighteen million, three hundred eighty-eight thousand, seven hundred ninety-six".