18857252 has 12 divisors (see below), whose sum is σ = 33309360. Its totient is φ = 9340296.

The previous prime is 18857249. The next prime is 18857257. The reversal of 18857252 is 25275881.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18857257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21602 + ... + 22457.

It is an arithmetic number, because the mean of its divisors is an integer number (2775780).

Almost surely, 2^18857252 is an apocalyptic number.

It is an amenable number.

18857252 is a deficient number, since it is larger than the sum of its proper divisors (14452108).

18857252 is a wasteful number, since it uses less digits than its factorization.

18857252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44170 (or 44168 counting only the distinct ones).

The product of its digits is 44800, while the sum is 38.

The square root of 18857252 is about 4342.4937535937. The cubic root of 18857252 is about 266.1702228897.

The spelling of 18857252 in words is "eighteen million, eight hundred fifty-seven thousand, two hundred fifty-two".