922231440 has 160 divisors (see below), whose sum is σ = 3421031040. Its totient is φ = 227003904.

The previous prime is 922231433. The next prime is 922231447. The reversal of 922231440 is 44132229.

It is an interprime number because it is at equal distance from previous prime (922231433) and next prime (922231447).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (922231447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11659 + ... + 44501.

It is an arithmetic number, because the mean of its divisors is an integer number (21381444).

Almost surely, 2^922231440 is an apocalyptic number.

922231440 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 922231440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1710515520).

922231440 is an abundant number, since it is smaller than the sum of its proper divisors (2498799600).

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

922231440 is a wasteful number, since it uses less digits than its factorization.

922231440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32878 (or 32866 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 922231440 is about 30368.2636974852. The cubic root of 922231440 is about 973.3745223495.

Adding to 922231440 its reverse (44132229), we get a palindrome (966363669).

The spelling of 922231440 in words is "nine hundred twenty-two million, two hundred thirty-one thousand, four hundred forty".