18368880 has 40 divisors (see below), whose sum is σ = 56944272. Its totient is φ = 4898304.

The previous prime is 18368879. The next prime is 18368887. The reversal of 18368880 is 8886381.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18368887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38029 + ... + 38508.

Almost surely, 2^18368880 is an apocalyptic number.

18368880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18368880 is an abundant number, since it is smaller than the sum of its proper divisors (38575392).

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

18368880 is a wasteful number, since it uses less digits than its factorization.

18368880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76553 (or 76547 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 18368880 is about 4285.8931391251. The cubic root of 18368880 is about 263.8523048987.

The spelling of 18368880 in words is "eighteen million, three hundred sixty-eight thousand, eight hundred eighty".