222639290 has 16 divisors (see below), whose sum is σ = 401207040. Its totient is φ = 88954320.

The previous prime is 222639281. The next prime is 222639299. The reversal of 222639290 is 92936222.

222639290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (222639281) and next prime (222639299).

It is a self number, because there is not a number n which added to its sum of digits gives 222639290.

It is not an unprimeable number, because it can be changed into a prime (222639299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3110 + ... + 21329.

It is an arithmetic number, because the mean of its divisors is an integer number (25075440).

Almost surely, 2^222639290 is an apocalyptic number.

222639290 is a deficient number, since it is larger than the sum of its proper divisors (178567750).

222639290 is a wasteful number, since it uses less digits than its factorization.

222639290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25357.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 222639290 is about 14921.1021710864. The cubic root of 222639290 is about 606.0855586880.

The spelling of 222639290 in words is "two hundred twenty-two million, six hundred thirty-nine thousand, two hundred ninety".