18712296 has 80 divisors (see below), whose sum is σ = 53317440. Its totient is φ = 6130080.

The previous prime is 18712289. The next prime is 18712297. The reversal of 18712296 is 69221781.

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 18712296.

It is not an unprimeable number, because it can be changed into a prime (18712297) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 43201 + ... + 43631.

It is an arithmetic number, because the mean of its divisors is an integer number (666468).

Almost surely, 2^18712296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18712296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26658720).

18712296 is an abundant number, since it is smaller than the sum of its proper divisors (34605144).

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

18712296 is a wasteful number, since it uses less digits than its factorization.

18712296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516 (or 503 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 18712296 is about 4325.7711451255. The cubic root of 18712296 is about 265.4864495622.

The spelling of 18712296 in words is "eighteen million, seven hundred twelve thousand, two hundred ninety-six".