18473672 has 32 divisors (see below), whose sum is σ = 40137600. Its totient is φ = 7807104.

The previous prime is 18473671. The next prime is 18473699. The reversal of 18473672 is 27637481.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18473671) by changing a digit.

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, 1829 + ... + 6347.

It is an arithmetic number, because the mean of its divisors is an integer number (1254300).

Almost surely, 2^18473672 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 18473672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20068800).

18473672 is an abundant number, since it is smaller than the sum of its proper divisors (21663928).

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

18473672 is a wasteful number, since it uses less digits than its factorization.

18473672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4605 (or 4601 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 18473672 is about 4298.1009760125. The cubic root of 18473672 is about 264.3531011301.

The spelling of 18473672 in words is "eighteen million, four hundred seventy-three thousand, six hundred seventy-two".