18472704 has 72 divisors (see below), whose sum is σ = 50037120. Its totient is φ = 6048768.

The previous prime is 18472697. The next prime is 18472711. The reversal of 18472704 is 40727481.

It is an interprime number because it is at equal distance from previous prime (18472697) and next prime (18472711).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 51277 + ... + 51635.

It is an arithmetic number, because the mean of its divisors is an integer number (694960).

Almost surely, 2^18472704 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 18472704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25018560).

18472704 is an abundant number, since it is smaller than the sum of its proper divisors (31564416).

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

18472704 is an equidigital number, since it uses as much as digits as its factorization.

18472704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 18472704 is about 4297.9883666664. The cubic root of 18472704 is about 264.3484837793.

The spelling of 18472704 in words is "eighteen million, four hundred seventy-two thousand, seven hundred four".