18520050 has 48 divisors (see below), whose sum is σ = 46193472. Its totient is φ = 4910400.

The previous prime is 18520043. The next prime is 18520063. The reversal of 18520050 is 5002581.

It is a junction number, because it is equal to n+sod(n) for n = 18519999 and 18520026.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46452 + ... + 46848.

It is an arithmetic number, because the mean of its divisors is an integer number (962364).

Almost surely, 2^18520050 is an apocalyptic number.

18520050 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 18520050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23096736).

18520050 is an abundant number, since it is smaller than the sum of its proper divisors (27673422).

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

18520050 is a wasteful number, since it uses less digits than its factorization.

18520050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 18520050 is about 4303.4927675087. The cubic root of 18520050 is about 264.5741350196.

The spelling of 18520050 in words is "eighteen million, five hundred twenty thousand, fifty".