18672090 has 32 divisors (see below), whose sum is σ = 46763136. Its totient is φ = 4762560.

The previous prime is 18672053. The next prime is 18672107. The reversal of 18672090 is 9027681.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12841 + ... + 14220.

It is an arithmetic number, because the mean of its divisors is an integer number (1461348).

Almost surely, 2^18672090 is an apocalyptic number.

18672090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18672090 is an abundant number, since it is smaller than the sum of its proper divisors (28091046).

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

18672090 is a wasteful number, since it uses less digits than its factorization.

18672090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27094.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 18672090 is about 4321.1213822340. The cubic root of 18672090 is about 265.2961682217.

The spelling of 18672090 in words is "eighteen million, six hundred seventy-two thousand, ninety".