18750024 has 24 divisors (see below), whose sum is σ = 50781510. Its totient is φ = 6249984.

The previous prime is 18750019. The next prime is 18750029. The reversal of 18750024 is 42005781.

It is an interprime number because it is at equal distance from previous prime (18750019) and next prime (18750029).

It can be written as a sum of positive squares in only one way, i.e., 15444900 + 3305124 = 3930^2 + 1818^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 18750024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18750029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130137 + ... + 130280.

Almost surely, 2^18750024 is an apocalyptic number.

It is an amenable number.

18750024 is an abundant number, since it is smaller than the sum of its proper divisors (32031486).

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

18750024 is a wasteful number, since it uses less digits than its factorization.

18750024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260429 (or 260422 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 18750024 is about 4330.1297902026. The cubic root of 18750024 is about 265.6647556459.

The spelling of 18750024 in words is "eighteen million, seven hundred fifty thousand, twenty-four".