290608864 has 96 divisors (see below), whose sum is σ = 734952960. Its totient is φ = 109942272.

The previous prime is 290608837. The next prime is 290608873. The reversal of 290608864 is 468806092.

It is a happy number.

290608864 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 290608864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64807 + ... + 69145.

It is an arithmetic number, because the mean of its divisors is an integer number (7655760).

Almost surely, 2^290608864 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 290608864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367476480).

290608864 is an abundant number, since it is smaller than the sum of its proper divisors (444344096).

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

290608864 is a wasteful number, since it uses less digits than its factorization.

290608864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4392 (or 4384 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 290608864 is about 17047.2538550935. The cubic root of 290608864 is about 662.3735049342.

The spelling of 290608864 in words is "two hundred ninety million, six hundred eight thousand, eight hundred sixty-four".