18404652 has 24 divisors (see below), whose sum is σ = 49079296. Its totient is φ = 5258448.

The previous prime is 18404627. The next prime is 18404653. The reversal of 18404652 is 25640481.

It is a super-2 number, since 2×18404652² = 677462430482208, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18404653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109468 + ... + 109635.

Almost surely, 2^18404652 is an apocalyptic number.

18404652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18404652 is an abundant number, since it is smaller than the sum of its proper divisors (30674644).

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

18404652 is a wasteful number, since it uses less digits than its factorization.

18404652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219117 (or 219115 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 18404652 is about 4290.0643351819. The cubic root of 18404652 is about 264.0234712833.

The spelling of 18404652 in words is "eighteen million, four hundred four thousand, six hundred fifty-two".