18036456 has 32 divisors (see below), whose sum is σ = 47744640. Its totient is φ = 5658368.

The previous prime is 18036449. The next prime is 18036457. The reversal of 18036456 is 65463081.

It is not an unprimeable number, because it can be changed into a prime (18036457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21696 + ... + 22511.

It is an arithmetic number, because the mean of its divisors is an integer number (1492020).

Almost surely, 2^18036456 is an apocalyptic number.

It is an amenable number.

18036456 is an abundant number, since it is smaller than the sum of its proper divisors (29708184).

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

18036456 is a wasteful number, since it uses less digits than its factorization.

18036456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44233 (or 44229 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 18036456 is about 4246.9348947211. The cubic root of 18036456 is about 262.2509492717.

The spelling of 18036456 in words is "eighteen million, thirty-six thousand, four hundred fifty-six".