290634256 has 120 divisors (see below), whose sum is σ = 662582592. Its totient is φ = 123129600.

The previous prime is 290634251. The next prime is 290634283. The reversal of 290634256 is 652436092.

It is not an unprimeable number, because it can be changed into a prime (290634251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2716155 + ... + 2716261.

Almost surely, 2^290634256 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 290634256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331291296).

290634256 is an abundant number, since it is smaller than the sum of its proper divisors (371948336).

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

290634256 is a wasteful number, since it uses less digits than its factorization.

290634256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 290634256 is about 17047.9985922102. The cubic root of 290634256 is about 662.3927960390.

The spelling of 290634256 in words is "two hundred ninety million, six hundred thirty-four thousand, two hundred fifty-six".