18424712 has 8 divisors (see below), whose sum is σ = 34546350. Its totient is φ = 9212352.

The previous prime is 18424711. The next prime is 18424717. The reversal of 18424712 is 21742481.

It can be written as a sum of positive squares in only one way, i.e., 17355556 + 1069156 = 4166^2 + 1034^2 .

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

It is not an unprimeable number, because it can be changed into a prime (18424711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1151537 + ... + 1151552.

Almost surely, 2^18424712 is an apocalyptic number.

It is an amenable number.

18424712 is a deficient number, since it is larger than the sum of its proper divisors (16121638).

18424712 is a wasteful number, since it uses less digits than its factorization.

18424712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2303095 (or 2303091 counting only the distinct ones).

The product of its digits is 3584, while the sum is 29.

The square root of 18424712 is about 4292.4016587454. The cubic root of 18424712 is about 264.1193598621.

The spelling of 18424712 in words is "eighteen million, four hundred twenty-four thousand, seven hundred twelve".