18307048 has 16 divisors (see below), whose sum is σ = 34974180. Its totient is φ = 8980608.

The previous prime is 18307039. The next prime is 18307049. The reversal of 18307048 is 84070381.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17791524 + 515524 = 4218^2 + 718^2 .

It is not an unprimeable number, because it can be changed into a prime (18307049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21165 + ... + 22012.

Almost surely, 2^18307048 is an apocalyptic number.

It is an amenable number.

18307048 is a deficient number, since it is larger than the sum of its proper divisors (16667132).

18307048 is a wasteful number, since it uses less digits than its factorization.

18307048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43236 (or 43232 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 18307048 is about 4278.6736262538. The cubic root of 18307048 is about 263.5559185538. Note that the first 3 decimals are identical.

The spelling of 18307048 in words is "eighteen million, three hundred seven thousand, forty-eight".