222020290 has 32 divisors (see below), whose sum is σ = 405926640. Its totient is φ = 87419904.

The previous prime is 222020261. The next prime is 222020303. The reversal of 222020290 is 92020222.

222020290 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 7778521 + 214241769 = 2789^2 + 14637^2 .

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, 278172 + ... + 278968.

Almost surely, 2^222020290 is an apocalyptic number.

222020290 is a deficient number, since it is larger than the sum of its proper divisors (183906350).

222020290 is a wasteful number, since it uses less digits than its factorization.

222020290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 222020290 is about 14900.3452980124. The cubic root of 222020290 is about 605.5233410776.

The spelling of 222020290 in words is "two hundred twenty-two million, twenty thousand, two hundred ninety".