18249996 has 24 divisors (see below), whose sum is σ = 43220800. Its totient is φ = 5992272.

The previous prime is 18249947. The next prime is 18249997. The reversal of 18249996 is 69994281.

It is a Smith number, since the sum of its digits (48) 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 (18249997) 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, 10546 + ... + 12153.

Almost surely, 2^18249996 is an apocalyptic number.

It is an amenable number.

18249996 is an abundant number, since it is smaller than the sum of its proper divisors (24970804).

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

18249996 is a wasteful number, since it uses less digits than its factorization.

18249996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22773 (or 22771 counting only the distinct ones).

The product of its digits is 279936, while the sum is 48.

The square root of 18249996 is about 4272.0014044942. The cubic root of 18249996 is about 263.2818521734.

It can be divided in two parts, 1824999 and 6, that added together give a triangular number (1825005 = T₁₉₁₀).

The spelling of 18249996 in words is "eighteen million, two hundred forty-nine thousand, nine hundred ninety-six".