18266000 has 40 divisors (see below), whose sum is σ = 44172024. Its totient is φ = 7305600.

The previous prime is 18265999. The next prime is 18266047. The reversal of 18266000 is 66281.

It can be written as a sum of positive squares in 4 ways, for example, as 50176 + 18215824 = 224^2 + 4268^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

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, 2567 + ... + 6566.

Almost surely, 2^18266000 is an apocalyptic number.

18266000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18266000 is an abundant number, since it is smaller than the sum of its proper divisors (25906024).

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

18266000 is an equidigital number, since it uses as much as digits as its factorization.

18266000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9156 (or 9140 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 18266000 is about 4273.8741207481. The cubic root of 18266000 is about 263.3587897554.

The spelling of 18266000 in words is "eighteen million, two hundred sixty-six thousand".