922221288 has 40 divisors (see below), whose sum is σ = 2583075330. Its totient is φ = 307406880.

The previous prime is 922221283. The next prime is 922221347. The reversal of 922221288 is 882122229.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 859779684 + 62441604 = 29322^2 + 7902^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (922221281) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 710943 + ... + 712238.

Almost surely, 2^922221288 is an apocalyptic number.

It is an amenable number.

922221288 is an abundant number, since it is smaller than the sum of its proper divisors (1660854042).

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

922221288 is a wasteful number, since it uses less digits than its factorization.

922221288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423199 (or 1423186 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 922221288 is about 30368.0965488455. The cubic root of 922221288 is about 973.3709506739.

The spelling of 922221288 in words is "nine hundred twenty-two million, two hundred twenty-one thousand, two hundred eighty-eight".