18413252 has 24 divisors (see below), whose sum is σ = 37857792. Its totient is φ = 7725600.

The previous prime is 18413249. The next prime is 18413267. The reversal of 18413252 is 25231481.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15524 + ... + 16667.

It is an arithmetic number, because the mean of its divisors is an integer number (1577408).

Almost surely, 2^18413252 is an apocalyptic number.

It is an amenable number.

18413252 is an abundant number, since it is smaller than the sum of its proper divisors (19444540).

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

18413252 is a wasteful number, since it uses less digits than its factorization.

18413252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32219 (or 32217 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 18413252 is about 4291.0665340915. The cubic root of 18413252 is about 264.0645885740.

The spelling of 18413252 in words is "eighteen million, four hundred thirteen thousand, two hundred fifty-two".