18312484 has 12 divisors (see below), whose sum is σ = 32913244. Its totient is φ = 8908704.

The previous prime is 18312457. The next prime is 18312487. The reversal of 18312484 is 48421381.

It can be written as a sum of positive squares in 2 ways, for example, as 15681600 + 2630884 = 3960^2 + 1622^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18312487) 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, 61719 + ... + 62014.

Almost surely, 2^18312484 is an apocalyptic number.

It is an amenable number.

18312484 is a deficient number, since it is larger than the sum of its proper divisors (14600760).

18312484 is a wasteful number, since it uses less digits than its factorization.

18312484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123774 (or 123772 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 18312484 is about 4279.3088226956. The cubic root of 18312484 is about 263.5820022820.

The spelling of 18312484 in words is "eighteen million, three hundred twelve thousand, four hundred eighty-four".