18857960 has 32 divisors (see below), whose sum is σ = 46288800. Its totient is φ = 6857280.

The previous prime is 18857939. The next prime is 18857963. The reversal of 18857960 is 6975881.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (18857963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20990 + ... + 21869.

It is an arithmetic number, because the mean of its divisors is an integer number (1446525).

Almost surely, 2^18857960 is an apocalyptic number.

18857960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18857960 is an abundant number, since it is smaller than the sum of its proper divisors (27430840).

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

18857960 is a wasteful number, since it uses less digits than its factorization.

18857960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42881 (or 42877 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 18857960 is about 4342.5752728076. The cubic root of 18857960 is about 266.1735539894.

The spelling of 18857960 in words is "eighteen million, eight hundred fifty-seven thousand, nine hundred sixty".