18307050 has 72 divisors (see below), whose sum is σ = 47282688. Its totient is φ = 4687200.

The previous prime is 18307049. The next prime is 18307063. The reversal of 18307050 is 5070381.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18307050.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 144087 + ... + 144213.

It is an arithmetic number, because the mean of its divisors is an integer number (656704).

Almost surely, 2^18307050 is an apocalyptic number.

18307050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18307050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23641344).

18307050 is an abundant number, since it is smaller than the sum of its proper divisors (28975638).

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

18307050 is a wasteful number, since it uses less digits than its factorization.

18307050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 18307050 is about 4278.6738599711. The cubic root of 18307050 is about 263.5559281514. Note that the first 3 decimals are identical.

The spelling of 18307050 in words is "eighteen million, three hundred seven thousand, fifty".