18231048 has 64 divisors (see below), whose sum is σ = 55252800. Its totient is φ = 5523840.

The previous prime is 18231029. The next prime is 18231049. The reversal of 18231048 is 84013281.

It is a super-2 number, since 2×18231048² = 664742222356608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (18231049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1461 + ... + 6212.

It is an arithmetic number, because the mean of its divisors is an integer number (863325).

Almost surely, 2^18231048 is an apocalyptic number.

18231048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18231048 is an abundant number, since it is smaller than the sum of its proper divisors (37021752).

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

18231048 is a wasteful number, since it uses less digits than its factorization.

18231048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7699 (or 7689 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 18231048 is about 4269.7831326661. The cubic root of 18231048 is about 263.1907034407.

The spelling of 18231048 in words is "eighteen million, two hundred thirty-one thousand, forty-eight".