18012996 has 48 divisors (see below), whose sum is σ = 49452480. Its totient is φ = 5650560.

The previous prime is 18012983. The next prime is 18013003. The reversal of 18012996 is 69921081.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18012996.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3070 + ... + 6741.

It is an arithmetic number, because the mean of its divisors is an integer number (1030260).

Almost surely, 2^18012996 is an apocalyptic number.

It is an amenable number.

18012996 is an abundant number, since it is smaller than the sum of its proper divisors (31439484).

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

18012996 is a wasteful number, since it uses less digits than its factorization.

18012996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9841 (or 9833 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 18012996 is about 4244.1720040545. The cubic root of 18012996 is about 262.1371967571.

The spelling of 18012996 in words is "eighteen million, twelve thousand, nine hundred ninety-six".