20083290 has 64 divisors (see below), whose sum is σ = 52068096. Its totient is φ = 4938752.

The previous prime is 20083289. The next prime is 20083309. The reversal of 20083290 is 9238002.

It is a self number, because there is not a number n which added to its sum of digits gives 20083290.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26659 + ... + 27401.

It is an arithmetic number, because the mean of its divisors is an integer number (813564).

Almost surely, 2^20083290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20083290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26034048).

20083290 is an abundant number, since it is smaller than the sum of its proper divisors (31984806).

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

20083290 is a wasteful number, since it uses less digits than its factorization.

20083290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 20083290 is about 4481.4383851616. The cubic root of 20083290 is about 271.8180462017.

The spelling of 20083290 in words is "twenty million, eighty-three thousand, two hundred ninety".