18234900 has 54 divisors (see below), whose sum is σ = 57159102. Its totient is φ = 4862400.

The previous prime is 18234893. The next prime is 18234907. The reversal of 18234900 is 943281.

It is an interprime number because it is at equal distance from previous prime (18234893) and next prime (18234907).

It can be written as a sum of positive squares in 3 ways, for example, as 138384 + 18096516 = 372^2 + 4254^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18234907) 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 17 ways as a sum of consecutive naturals, for example, 9231 + ... + 11030.

Almost surely, 2^18234900 is an apocalyptic number.

18234900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18234900 is an abundant number, since it is smaller than the sum of its proper divisors (38924202).

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

18234900 is a wasteful number, since it uses less digits than its factorization.

18234900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20281 (or 20271 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 18234900 is about 4270.2341856156. The cubic root of 18234900 is about 263.2092384731.

The spelling of 18234900 in words is "eighteen million, two hundred thirty-four thousand, nine hundred".