18828140 has 12 divisors (see below), whose sum is σ = 39539136. Its totient is φ = 7531248.

The previous prime is 18828137. The next prime is 18828167. The reversal of 18828140 is 4182881.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18828097 and 18828106.

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, 470684 + ... + 470723.

It is an arithmetic number, because the mean of its divisors is an integer number (3294928).

Almost surely, 2^18828140 is an apocalyptic number.

18828140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18828140 is an abundant number, since it is smaller than the sum of its proper divisors (20710996).

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

18828140 is a wasteful number, since it uses less digits than its factorization.

18828140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941416 (or 941414 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 18828140 is about 4339.1404678807. The cubic root of 18828140 is about 266.0331803259.

The spelling of 18828140 in words is "eighteen million, eight hundred twenty-eight thousand, one hundred forty".