222406620 has 24 divisors (see below), whose sum is σ = 622738704. Its totient is φ = 59308416.

The previous prime is 222406601. The next prime is 222406637. The reversal of 222406620 is 26604222.

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, 1853329 + ... + 1853448.

It is an arithmetic number, because the mean of its divisors is an integer number (25947446).

Almost surely, 2^222406620 is an apocalyptic number.

222406620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222406620 is an abundant number, since it is smaller than the sum of its proper divisors (400332084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222406620 is a wasteful number, since it uses less digits than its factorization.

222406620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706789 (or 3706787 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 222406620 is about 14913.3034569810. The cubic root of 222406620 is about 605.8743544583.

The spelling of 222406620 in words is "two hundred twenty-two million, four hundred six thousand, six hundred twenty".