18852020 has 24 divisors (see below), whose sum is σ = 43188768. Its totient is φ = 6855200.

The previous prime is 18851969. The next prime is 18852077. The reversal of 18852020 is 2025881.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42626 + ... + 43065.

It is an arithmetic number, because the mean of its divisors is an integer number (1799532).

Almost surely, 2^18852020 is an apocalyptic number.

18852020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18852020 is an abundant number, since it is smaller than the sum of its proper divisors (24336748).

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

18852020 is a wasteful number, since it uses less digits than its factorization.

18852020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85711 (or 85709 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 18852020 is about 4341.8912929736. The cubic root of 18852020 is about 266.1456040425.

The spelling of 18852020 in words is "eighteen million, eight hundred fifty-two thousand, twenty".