18800136 has 48 divisors (see below), whose sum is σ = 52565760. Its totient is φ = 6063840.

The previous prime is 18800087. The next prime is 18800137. The reversal of 18800136 is 63100881.

It is a super-2 number, since 2×18800136² = 706890227236992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18800137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1980 + ... + 6443.

It is an arithmetic number, because the mean of its divisors is an integer number (1095120).

Almost surely, 2^18800136 is an apocalyptic number.

It is an amenable number.

18800136 is an abundant number, since it is smaller than the sum of its proper divisors (33765624).

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

18800136 is a wasteful number, since it uses less digits than its factorization.

18800136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8466 (or 8459 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 18800136 is about 4335.9123607379. The cubic root of 18800136 is about 265.9012202241.

The spelling of 18800136 in words is "eighteen million, eight hundred thousand, one hundred thirty-six".