18848840 has 32 divisors (see below), whose sum is σ = 43875000. Its totient is φ = 7279104.

The previous prime is 18848839. The next prime is 18848849. The reversal of 18848840 is 4884881.

It can be written as a sum of positive squares in 4 ways, for example, as 15952036 + 2896804 = 3994^2 + 1702^2 .

It is not an unprimeable number, because it can be changed into a prime (18848849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6965 + ... + 9284.

Almost surely, 2^18848840 is an apocalyptic number.

18848840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18848840 is an abundant number, since it is smaller than the sum of its proper divisors (25026160).

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

18848840 is a wasteful number, since it uses less digits than its factorization.

18848840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16289 (or 16285 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 41.

The square root of 18848840 is about 4341.5250776657. The cubic root of 18848840 is about 266.1306385266.

The spelling of 18848840 in words is "eighteen million, eight hundred forty-eight thousand, eight hundred forty".