18742850 has 24 divisors (see below), whose sum is σ = 39842688. Its totient is φ = 6426000.

The previous prime is 18742849. The next prime is 18742901. The reversal of 18742850 is 5824781.

It is a super-2 number, since 2×18742850² = 702588852245000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 18742850.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26426 + ... + 27125.

It is an arithmetic number, because the mean of its divisors is an integer number (1660112).

Almost surely, 2^18742850 is an apocalyptic number.

18742850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18742850 is an abundant number, since it is smaller than the sum of its proper divisors (21099838).

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

18742850 is a wasteful number, since it uses less digits than its factorization.

18742850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53570 (or 53565 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 18742850 is about 4329.3013293140. The cubic root of 18742850 is about 265.6308690745.

The spelling of 18742850 in words is "eighteen million, seven hundred forty-two thousand, eight hundred fifty".