18840528 has 60 divisors (see below), whose sum is σ = 60263008. Its totient is φ = 5382720.

The previous prime is 18840527. The next prime is 18840553. The reversal of 18840528 is 82504881.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 18840492 and 18840501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18840527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8338 + ... + 10353.

Almost surely, 2^18840528 is an apocalyptic number.

18840528 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18840528 is an abundant number, since it is smaller than the sum of its proper divisors (41422480).

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

18840528 is a wasteful number, since it uses less digits than its factorization.

18840528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18712 (or 18703 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 18840528 is about 4340.5677048054. The cubic root of 18840528 is about 266.0915131638.

The spelling of 18840528 in words is "eighteen million, eight hundred forty thousand, five hundred twenty-eight".