18308252 has 24 divisors (see below), whose sum is σ = 34073424. Its totient is φ = 8577792.

The previous prime is 18308249. The next prime is 18308261. The reversal of 18308252 is 25280381.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20438 + ... + 21314.

It is an arithmetic number, because the mean of its divisors is an integer number (1419726).

Almost surely, 2^18308252 is an apocalyptic number.

It is an amenable number.

18308252 is a deficient number, since it is larger than the sum of its proper divisors (15765172).

18308252 is a wasteful number, since it uses less digits than its factorization.

18308252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205 (or 1203 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 18308252 is about 4278.8143217485. The cubic root of 18308252 is about 263.5616961896.

The spelling of 18308252 in words is "eighteen million, three hundred eight thousand, two hundred fifty-two".