18464628 has 96 divisors (see below), whose sum is σ = 54578944. Its totient is φ = 4727808.

The previous prime is 18464603. The next prime is 18464647. The reversal of 18464628 is 82646481.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40176 + ... + 40632.

Almost surely, 2^18464628 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 18464628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27289472).

18464628 is an abundant number, since it is smaller than the sum of its proper divisors (36114316).

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

18464628 is a wasteful number, since it uses less digits than its factorization.

18464628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 519 counting only the distinct ones).

The product of its digits is 73728, while the sum is 39.

The square root of 18464628 is about 4297.0487546687. The cubic root of 18464628 is about 264.3099550481.

The spelling of 18464628 in words is "eighteen million, four hundred sixty-four thousand, six hundred twenty-eight".