18623040 has 112 divisors (see below), whose sum is σ = 62301120. Its totient is φ = 4700160.

The previous prime is 18623039. The next prime is 18623047. The reversal of 18623040 is 4032681.

It is a happy number.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 18623040.

It is not an unprimeable number, because it can be changed into a prime (18623047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17730 + ... + 18750.

It is an arithmetic number, because the mean of its divisors is an integer number (556260).

Almost surely, 2^18623040 is an apocalyptic number.

18623040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18623040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31150560).

18623040 is an abundant number, since it is smaller than the sum of its proper divisors (43678080).

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

18623040 is a wasteful number, since it uses less digits than its factorization.

18623040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 18623040 is about 4315.4420399306. The cubic root of 18623040 is about 265.0636609841.

The spelling of 18623040 in words is "eighteen million, six hundred twenty-three thousand, forty".