290220288 has 72 divisors (see below), whose sum is σ = 813103200. Its totient is φ = 91643904.

The previous prime is 290220283. The next prime is 290220289. The reversal of 290220288 is 882022092.

It is a super-3 number, since 3×290220288³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290220283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4648 + ... + 24536.

It is an arithmetic number, because the mean of its divisors is an integer number (11293100).

Almost surely, 2^290220288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290220288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406551600).

290220288 is an abundant number, since it is smaller than the sum of its proper divisors (522882912).

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

290220288 is a wasteful number, since it uses less digits than its factorization.

290220288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19927 (or 19913 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 290220288 is about 17035.8530165061. The cubic root of 290220288 is about 662.0781511896.

The spelling of 290220288 in words is "two hundred ninety million, two hundred twenty thousand, two hundred eighty-eight".