2090345220 has 72 divisors (see below), whose sum is σ = 6448216320. Its totient is φ = 547974720.

The previous prime is 2090345219. The next prime is 2090345227. The reversal of 2090345220 is 225430902.

2090345220 is a `hidden beast` number, since 20 + 90 + 34 + 522 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (2090345227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87796 + ... + 109035.

It is an arithmetic number, because the mean of its divisors is an integer number (89558560).

Almost surely, 2^2090345220 is an apocalyptic number.

2090345220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2090345220 is an abundant number, since it is smaller than the sum of its proper divisors (4357871100).

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

2090345220 is a wasteful number, since it uses less digits than its factorization.

2090345220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196905 (or 196900 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 2090345220 is about 45720.2933061458. The cubic root of 2090345220 is about 1278.6136560829.

The spelling of 2090345220 in words is "two billion, ninety million, three hundred forty-five thousand, two hundred twenty".