18575840 has 24 divisors (see below), whose sum is σ = 43885800. Its totient is φ = 7430272.

The previous prime is 18575833. The next prime is 18575861. The reversal of 18575840 is 4857581.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 18575794 and 18575803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57890 + ... + 58209.

It is an arithmetic number, because the mean of its divisors is an integer number (1828575).

Almost surely, 2^18575840 is an apocalyptic number.

18575840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18575840 is an abundant number, since it is smaller than the sum of its proper divisors (25309960).

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

18575840 is a wasteful number, since it uses less digits than its factorization.

18575840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116114 (or 116106 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 18575840 is about 4309.9698374815. The cubic root of 18575840 is about 264.8395373645.

The spelling of 18575840 in words is "eighteen million, five hundred seventy-five thousand, eight hundred forty".