18426850 has 24 divisors (see below), whose sum is σ = 36911700. Its totient is φ = 6803520.

The previous prime is 18426817. The next prime is 18426857. The reversal of 18426850 is 5862481.

It can be written as a sum of positive squares in 6 ways, for example, as 423801 + 18003049 = 651^2 + 4243^2 .

It is not an unprimeable number, because it can be changed into a prime (18426857) 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, 13525 + ... + 14824.

Almost surely, 2^18426850 is an apocalyptic number.

18426850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18426850 is an abundant number, since it is smaller than the sum of its proper divisors (18484850).

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

18426850 is a wasteful number, since it uses less digits than its factorization.

18426850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28374 (or 28369 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 18426850 is about 4292.6506962482. The cubic root of 18426850 is about 264.1295755867.

The spelling of 18426850 in words is "eighteen million, four hundred twenty-six thousand, eight hundred fifty".