18868232 has 24 divisors (see below), whose sum is σ = 37586010. Its totient is φ = 8878080.

The previous prime is 18868231. The next prime is 18868279. The reversal of 18868232 is 23286881.

It can be written as a sum of positive squares in 3 ways, for example, as 18369796 + 498436 = 4286^2 + 706^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18868231) 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 5 ways as a sum of consecutive naturals, for example, 1769 + ... + 6392.

Almost surely, 2^18868232 is an apocalyptic number.

It is an amenable number.

18868232 is a deficient number, since it is larger than the sum of its proper divisors (18717778).

18868232 is a wasteful number, since it uses less digits than its factorization.

18868232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8201 (or 8180 counting only the distinct ones).

The product of its digits is 36864, while the sum is 38.

The square root of 18868232 is about 4343.7578201368. The cubic root of 18868232 is about 266.2218737876.

The spelling of 18868232 in words is "eighteen million, eight hundred sixty-eight thousand, two hundred thirty-two".