18229300 has 36 divisors (see below), whose sum is σ = 39743116. Its totient is φ = 7257600.

The previous prime is 18229261. The next prime is 18229327. The reversal of 18229300 is 392281.

It can be written as a sum of positive squares in 6 ways, for example, as 7963684 + 10265616 = 2822^2 + 3204^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41884 + ... + 42316.

Almost surely, 2^18229300 is an apocalyptic number.

18229300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18229300 is an abundant number, since it is smaller than the sum of its proper divisors (21513816).

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

18229300 is a wasteful number, since it uses less digits than its factorization.

18229300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 18229300 is about 4269.5784335224. The cubic root of 18229300 is about 263.1822915627.

The spelling of 18229300 in words is "eighteen million, two hundred twenty-nine thousand, three hundred".