18615252 has 48 divisors (see below), whose sum is σ = 45258752. Its totient is φ = 5948640.

The previous prime is 18615251. The next prime is 18615263. The reversal of 18615252 is 25251681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18615251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60483 + ... + 60789.

Almost surely, 2^18615252 is an apocalyptic number.

18615252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18615252 is an abundant number, since it is smaller than the sum of its proper divisors (26643500).

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

18615252 is a wasteful number, since it uses less digits than its factorization.

18615252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 506 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

The square root of 18615252 is about 4314.5396046392. The cubic root of 18615252 is about 265.0267066949.

The spelling of 18615252 in words is "eighteen million, six hundred fifteen thousand, two hundred fifty-two".