290222656 has 14 divisors (see below), whose sum is σ = 575910710. Its totient is φ = 145111296.

The previous prime is 290222629. The next prime is 290222729. The reversal of 290222656 is 656222092.

It can be written as a sum of positive squares in only one way, i.e., 286286400 + 3936256 = 16920^2 + 1984^2 .

It is a super-3 number, since 3×290222656³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2267301 + ... + 2267428.

Almost surely, 2^290222656 is an apocalyptic number.

It is an amenable number.

290222656 is a deficient number, since it is larger than the sum of its proper divisors (285688054).

290222656 is an equidigital number, since it uses as much as digits as its factorization.

290222656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4534741 (or 4534731 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 290222656 is about 17035.9225168466. The cubic root of 290222656 is about 662.0799518871.

The spelling of 290222656 in words is "two hundred ninety million, two hundred twenty-two thousand, six hundred fifty-six".