290022212 has 6 divisors (see below), whose sum is σ = 507538878. Its totient is φ = 145011104.

The previous prime is 290022209. The next prime is 290022221. The reversal of 290022212 is 212220092.

It can be written as a sum of positive squares in only one way, i.e., 282710596 + 7311616 = 16814^2 + 2704^2 .

It is a super-2 number, since 2×290022212² = 168225766906745888, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 36252773 + ... + 36252780.

It is an arithmetic number, because the mean of its divisors is an integer number (84589813).

Almost surely, 2^290022212 is an apocalyptic number.

It is an amenable number.

290022212 is a deficient number, since it is larger than the sum of its proper divisors (217516666).

290022212 is a wasteful number, since it uses less digits than its factorization.

290022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72505557 (or 72505555 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 290022212 is about 17030.0385202148. The cubic root of 290022212 is about 661.9274936334.

The spelling of 290022212 in words is "two hundred ninety million, twenty-two thousand, two hundred twelve".