18445252 has 24 divisors (see below), whose sum is σ = 37094400. Its totient is φ = 7861440.

The previous prime is 18445201. The next prime is 18445253. The reversal of 18445252 is 25254481.

It is not an unprimeable number, because it can be changed into a prime (18445253) 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, 3624 + ... + 7072.

It is an arithmetic number, because the mean of its divisors is an integer number (1545600).

Almost surely, 2^18445252 is an apocalyptic number.

It is an amenable number.

18445252 is an abundant number, since it is smaller than the sum of its proper divisors (18649148).

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

18445252 is a wasteful number, since it uses less digits than its factorization.

18445252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3651 (or 3649 counting only the distinct ones).

The product of its digits is 12800, while the sum is 31.

The square root of 18445252 is about 4294.7935922463. The cubic root of 18445252 is about 264.2174707933.

The spelling of 18445252 in words is "eighteen million, four hundred forty-five thousand, two hundred fifty-two".