290245320 has 96 divisors (see below), whose sum is σ = 958833720. Its totient is φ = 76124160.

The previous prime is 290245297. The next prime is 290245327. The reversal of 290245320 is 23542092.

It can be written as a sum of positive squares in 4 ways, for example, as 137030436 + 153214884 = 11706^2 + 12378^2 .

It is not an unprimeable number, because it can be changed into a prime (290245327) 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, 15352 + ... + 28568.

Almost surely, 2^290245320 is an apocalyptic number.

290245320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290245320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (479416860).

290245320 is an abundant number, since it is smaller than the sum of its proper divisors (668588400).

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

290245320 is a wasteful number, since it uses less digits than its factorization.

290245320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13295 (or 13288 counting only the distinct ones).

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

The square root of 290245320 is about 17036.5876865058. The cubic root of 290245320 is about 662.0971857695.

The spelling of 290245320 in words is "two hundred ninety million, two hundred forty-five thousand, three hundred twenty".