18041472 has 48 divisors (see below), whose sum is σ = 51919530. Its totient is φ = 6013440.

The previous prime is 18041449. The next prime is 18041483. The reversal of 18041472 is 27414081.

18041472 is a `hidden beast` number, since 180 + 414 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9884736 + 8156736 = 3144^2 + 2856^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6679 + ... + 8982.

Almost surely, 2^18041472 is an apocalyptic number.

18041472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18041472 is an abundant number, since it is smaller than the sum of its proper divisors (33878058).

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

18041472 is a wasteful number, since it uses less digits than its factorization.

18041472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15681 (or 15666 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 18041472 is about 4247.5253972166. The cubic root of 18041472 is about 262.2752579799.

The spelling of 18041472 in words is "eighteen million, forty-one thousand, four hundred seventy-two".