18705050 has 48 divisors (see below), whose sum is σ = 42830592. Its totient is φ = 5918400.

The previous prime is 18705031. The next prime is 18705053. The reversal of 18705050 is 5050781.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (18705053) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2495 + ... + 6605.

It is an arithmetic number, because the mean of its divisors is an integer number (892304).

Almost surely, 2^18705050 is an apocalyptic number.

18705050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18705050 is an abundant number, since it is smaller than the sum of its proper divisors (24125542).

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

18705050 is a wasteful number, since it uses less digits than its factorization.

18705050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4143 (or 4138 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 18705050 is about 4324.9335255007. The cubic root of 18705050 is about 265.4521768541.

The spelling of 18705050 in words is "eighteen million, seven hundred five thousand, fifty".