290606222 has 16 divisors (see below), whose sum is σ = 440743680. Its totient is φ = 143696568.

The previous prime is 290606203. The next prime is 290606233. The reversal of 290606222 is 222606092.

It is a super-2 number, since 2×290606222² = 168903952530226568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221693 + ... + 222999.

It is an arithmetic number, because the mean of its divisors is an integer number (27546480).

Almost surely, 2^290606222 is an apocalyptic number.

290606222 is a deficient number, since it is larger than the sum of its proper divisors (150137458).

290606222 is a wasteful number, since it uses less digits than its factorization.

290606222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 290606222 is about 17047.1763644306. The cubic root of 290606222 is about 662.3714976587.

The spelling of 290606222 in words is "two hundred ninety million, six hundred six thousand, two hundred twenty-two".