18828330 has 16 divisors (see below), whose sum is σ = 45188064. Its totient is φ = 5020880.

The previous prime is 18828323. The next prime is 18828353. The reversal of 18828330 is 3382881.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 18828291 and 18828300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313776 + ... + 313835.

It is an arithmetic number, because the mean of its divisors is an integer number (2824254).

Almost surely, 2^18828330 is an apocalyptic number.

18828330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18828330 is an abundant number, since it is smaller than the sum of its proper divisors (26359734).

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

18828330 is a wasteful number, since it uses less digits than its factorization.

18828330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627621.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 18828330 is about 4339.1623615624. The cubic root of 18828330 is about 266.0340751945.

The spelling of 18828330 in words is "eighteen million, eight hundred twenty-eight thousand, three hundred thirty".