18264260 has 36 divisors (see below), whose sum is σ = 44619372. Its totient is φ = 6261696.

The previous prime is 18264241. The next prime is 18264299. The reversal of 18264260 is 6246281.

It can be written as a sum of positive squares in 2 ways, for example, as 2119936 + 16144324 = 1456^2 + 4018^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8339 + ... + 10298.

It is an arithmetic number, because the mean of its divisors is an integer number (1239427).

Almost surely, 2^18264260 is an apocalyptic number.

18264260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18264260 is an abundant number, since it is smaller than the sum of its proper divisors (26355112).

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

18264260 is a wasteful number, since it uses less digits than its factorization.

18264260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18660 (or 18651 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 18264260 is about 4273.6705535172. The cubic root of 18264260 is about 263.3504270625.

The spelling of 18264260 in words is "eighteen million, two hundred sixty-four thousand, two hundred sixty".