18075880 has 16 divisors (see below), whose sum is σ = 40670820. Its totient is φ = 7230336.

The previous prime is 18075857. The next prime is 18075899. The reversal of 18075880 is 8857081.

It can be written as a sum of positive squares in 2 ways, for example, as 17489124 + 586756 = 4182^2 + 766^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 225909 + ... + 225988.

Almost surely, 2^18075880 is an apocalyptic number.

18075880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18075880 is an abundant number, since it is smaller than the sum of its proper divisors (22594940).

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

18075880 is a wasteful number, since it uses less digits than its factorization.

18075880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451908 (or 451904 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 37.

The square root of 18075880 is about 4251.5738262436. The cubic root of 18075880 is about 262.4418858503.

The spelling of 18075880 in words is "eighteen million, seventy-five thousand, eight hundred eighty".