18575040 has 112 divisors (see below), whose sum is σ = 64373760. Its totient is φ = 4500480.

The previous prime is 18575003. The next prime is 18575041. The reversal of 18575040 is 4057581.

It is a super-2 number, since 2×18575040² = 690064222003200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 18574989 and 18575007.

It is not an unprimeable number, because it can be changed into a prime (18575041) 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, 9681 + ... + 11439.

Almost surely, 2^18575040 is an apocalyptic number.

18575040 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 18575040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32186880).

18575040 is an abundant number, since it is smaller than the sum of its proper divisors (45798720).

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

18575040 is a wasteful number, since it uses less digits than its factorization.

18575040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790 (or 1780 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 18575040 is about 4309.8770284081. The cubic root of 18575040 is about 264.8357353889.

The spelling of 18575040 in words is "eighteen million, five hundred seventy-five thousand, forty".