18290252 has 12 divisors (see below), whose sum is σ = 32194176. Its totient is φ = 9091920.

The previous prime is 18290243. The next prime is 18290257. The reversal of 18290252 is 25209281.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18290257) 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 3 ways as a sum of consecutive naturals, for example, 12524 + ... + 13907.

It is an arithmetic number, because the mean of its divisors is an integer number (2682848).

Almost surely, 2^18290252 is an apocalyptic number.

It is an amenable number.

18290252 is a deficient number, since it is larger than the sum of its proper divisors (13903924).

18290252 is a wasteful number, since it uses less digits than its factorization.

18290252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26608 (or 26606 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 18290252 is about 4276.7104180667. The cubic root of 18290252 is about 263.4752931453.

The spelling of 18290252 in words is "eighteen million, two hundred ninety thousand, two hundred fifty-two".