18426672 has 60 divisors (see below), whose sum is σ = 56262024. Its totient is φ = 5583360.

The previous prime is 18426659. The next prime is 18426673. The reversal of 18426672 is 27662481.

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

It is not an unprimeable number, because it can be changed into a prime (18426673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4233 + ... + 7400.

Almost surely, 2^18426672 is an apocalyptic number.

18426672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18426672 is an abundant number, since it is smaller than the sum of its proper divisors (37835352).

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

18426672 is a wasteful number, since it uses less digits than its factorization.

18426672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11658 (or 11649 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 18426672 is about 4292.6299630879. The cubic root of 18426672 is about 264.1287251029.

The spelling of 18426672 in words is "eighteen million, four hundred twenty-six thousand, six hundred seventy-two".