18103252 has 12 divisors (see below), whose sum is σ = 31772916. Its totient is φ = 9025280.

The previous prime is 18103243. The next prime is 18103271. The reversal of 18103252 is 25230181.

It can be written as a sum of positive squares in 2 ways, for example, as 3632836 + 14470416 = 1906^2 + 3804^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4999 + ... + 7822.

It is an arithmetic number, because the mean of its divisors is an integer number (2647743).

Almost surely, 2^18103252 is an apocalyptic number.

It is an amenable number.

18103252 is a deficient number, since it is larger than the sum of its proper divisors (13669664).

18103252 is a wasteful number, since it uses less digits than its factorization.

18103252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13178 (or 13176 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 18103252 is about 4254.7916517733. The cubic root of 18103252 is about 262.5742894800.

The spelling of 18103252 in words is "eighteen million, one hundred three thousand, two hundred fifty-two".