221622968 has 32 divisors (see below), whose sum is σ = 490229760. Its totient is φ = 91916640.

The previous prime is 221622953. The next prime is 221622979. The reversal of 221622968 is 869226122.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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, 62096 + ... + 65567.

It is an arithmetic number, because the mean of its divisors is an integer number (15319680).

Almost surely, 2^221622968 is an apocalyptic number.

221622968 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

221622968 is an abundant number, since it is smaller than the sum of its proper divisors (268606792).

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

221622968 is a wasteful number, since it uses less digits than its factorization.

221622968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127707 (or 127703 counting only the distinct ones).

The product of its digits is 41472, while the sum is 38.

The square root of 221622968 is about 14887.0066836823. The cubic root of 221622968 is about 605.1619155454.

The spelling of 221622968 in words is "two hundred twenty-one million, six hundred twenty-two thousand, nine hundred sixty-eight".