18369828 has 36 divisors (see below), whose sum is σ = 48157200. Its totient is φ = 6122952.

The previous prime is 18369821. The next prime is 18369899. The reversal of 18369828 is 82896381.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (18369821) 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, 8478 + ... + 10421.

It is an arithmetic number, because the mean of its divisors is an integer number (1337700).

Almost surely, 2^18369828 is an apocalyptic number.

18369828 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18369828 is an abundant number, since it is smaller than the sum of its proper divisors (29787372).

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

18369828 is a wasteful number, since it uses less digits than its factorization.

18369828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18918 (or 18904 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 18369828 is about 4286.0037330828. The cubic root of 18369828 is about 263.8568438741.

It can be divided in two parts, 1836 and 9828, that added together give a square (11664 = 108²).

The spelling of 18369828 in words is "eighteen million, three hundred sixty-nine thousand, eight hundred twenty-eight".