18267948 has 36 divisors (see below), whose sum is σ = 47255208. Its totient is φ = 5947200.

The previous prime is 18267943. The next prime is 18267961. The reversal of 18267948 is 84976281.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (18267943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4353 + ... + 7448.

Almost surely, 2^18267948 is an apocalyptic number.

18267948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18267948 is an abundant number, since it is smaller than the sum of its proper divisors (28987260).

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

18267948 is a wasteful number, since it uses less digits than its factorization.

18267948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11854 (or 11849 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 18267948 is about 4274.1020109492. The cubic root of 18267948 is about 263.3681514964.

The spelling of 18267948 in words is "eighteen million, two hundred sixty-seven thousand, nine hundred forty-eight".