18572250 has 32 divisors (see below), whose sum is σ = 46358208. Its totient is φ = 4952400.

The previous prime is 18572249. The next prime is 18572287. The reversal of 18572250 is 5227581.

It is a super-3 number, since 3×18572250³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 11632 + ... + 13131.

It is an arithmetic number, because the mean of its divisors is an integer number (1448694).

Almost surely, 2^18572250 is an apocalyptic number.

18572250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18572250 is an abundant number, since it is smaller than the sum of its proper divisors (27785958).

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

18572250 is a wasteful number, since it uses less digits than its factorization.

18572250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24783 (or 24773 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 18572250 is about 4309.5533411248. The cubic root of 18572250 is about 264.8224751447.

The spelling of 18572250 in words is "eighteen million, five hundred seventy-two thousand, two hundred fifty".