18468456 has 64 divisors (see below), whose sum is σ = 49204800. Its totient is φ = 5760000.

The previous prime is 18468431. The next prime is 18468469. The reversal of 18468456 is 65486481.

18468456 = T₄₁₅ + T₄₁₆ + ... + T₅₆₆.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45856 + ... + 46256.

It is an arithmetic number, because the mean of its divisors is an integer number (768825).

Almost surely, 2^18468456 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 18468456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24602400).

18468456 is an abundant number, since it is smaller than the sum of its proper divisors (30736344).

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

18468456 is a wasteful number, since it uses less digits than its factorization.

18468456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 526 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 18468456 is about 4297.4941535737. The cubic root of 18468456 is about 264.3282189524.

The spelling of 18468456 in words is "eighteen million, four hundred sixty-eight thousand, four hundred fifty-six".