18418024 has 8 divisors (see below), whose sum is σ = 34533810. Its totient is φ = 9209008.

The previous prime is 18418019. The next prime is 18418027. The reversal of 18418024 is 42081481.

It can be written as a sum of positive squares in only one way, i.e., 18404100 + 13924 = 4290^2 + 118^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 18417983 and 18418001.

It is not an unprimeable number, because it can be changed into a prime (18418027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1151119 + ... + 1151134.

Almost surely, 2^18418024 is an apocalyptic number.

It is an amenable number.

18418024 is a deficient number, since it is larger than the sum of its proper divisors (16115786).

18418024 is a wasteful number, since it uses less digits than its factorization.

18418024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302259 (or 2302255 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 18418024 is about 4291.6225369899. The cubic root of 18418024 is about 264.0873983665.

The spelling of 18418024 in words is "eighteen million, four hundred eighteen thousand, twenty-four".