18672250 has 32 divisors (see below), whose sum is σ = 36803520. Its totient is φ = 7074000.

The previous prime is 18672221. The next prime is 18672253. The reversal of 18672250 is 5227681.

It is not an unprimeable number, because it can be changed into a prime (18672253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2785 + ... + 6715.

It is an arithmetic number, because the mean of its divisors is an integer number (1150110).

Almost surely, 2^18672250 is an apocalyptic number.

18672250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18672250 is a deficient number, since it is larger than the sum of its proper divisors (18131270).

18672250 is a wasteful number, since it uses less digits than its factorization.

18672250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967 (or 3957 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 18672250 is about 4321.1398959071. The cubic root of 18672250 is about 265.2969259884.

The spelling of 18672250 in words is "eighteen million, six hundred seventy-two thousand, two hundred fifty".