222028639 has 16 divisors (see below), whose sum is σ = 257753088. Its totient is φ = 187330752.

The previous prime is 222028633. The next prime is 222028643. The reversal of 222028639 is 936820222.

It is not a de Polignac number, because 222028639 - 2⁹ = 222028127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222028633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120882 + ... + 122704.

It is an arithmetic number, because the mean of its divisors is an integer number (16109568).

Almost surely, 2^222028639 is an apocalyptic number.

222028639 is a deficient number, since it is larger than the sum of its proper divisors (35724449).

222028639 is a wasteful number, since it uses less digits than its factorization.

222028639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 222028639 is about 14900.6254566713. The cubic root of 222028639 is about 605.5309311512.

The spelling of 222028639 in words is "two hundred twenty-two million, twenty-eight thousand, six hundred thirty-nine".