18534472 has 16 divisors (see below), whose sum is σ = 37911600. Its totient is φ = 8424720.

The previous prime is 18534463. The next prime is 18534473. The reversal of 18534472 is 27443581.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (18534473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105222 + ... + 105397.

It is an arithmetic number, because the mean of its divisors is an integer number (2369475).

Almost surely, 2^18534472 is an apocalyptic number.

It is an amenable number.

18534472 is an abundant number, since it is smaller than the sum of its proper divisors (19377128).

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

18534472 is a wasteful number, since it uses less digits than its factorization.

18534472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210636 (or 210632 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 18534472 is about 4305.1680571146. The cubic root of 18534472 is about 264.6427939082.

The spelling of 18534472 in words is "eighteen million, five hundred thirty-four thousand, four hundred seventy-two".