18446472 has 48 divisors (see below), whose sum is σ = 54503280. Its totient is φ = 5589600.

The previous prime is 18446453. The next prime is 18446531. The reversal of 18446472 is 27464481.

18446472 is a `hidden beast` number, since 1 + 8 + 4 + 4 + 647 + 2 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10854 + ... + 12437.

It is an arithmetic number, because the mean of its divisors is an integer number (1135485).

Almost surely, 2^18446472 is an apocalyptic number.

18446472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18446472 is an abundant number, since it is smaller than the sum of its proper divisors (36056808).

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

18446472 is a wasteful number, since it uses less digits than its factorization.

18446472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23314 (or 23307 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 18446472 is about 4294.9356223348. The cubic root of 18446472 is about 264.2232959275.

Subtracting 18446472 from its reverse (27464481), we obtain a square (9018009 = 3003²).

It can be divided in two parts, 184 and 46472, that added together give a 6-th power (46656 = 6⁶).

The spelling of 18446472 in words is "eighteen million, four hundred forty-six thousand, four hundred seventy-two".