122897320 has 128 divisors (see below), whose sum is σ = 358444800. Its totient is φ = 36827136.

The previous prime is 122897293. The next prime is 122897323. The reversal of 122897320 is 23798221.

It is not an unprimeable number, because it can be changed into a prime (122897323) 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, 68272 + ... + 70048.

It is an arithmetic number, because the mean of its divisors is an integer number (2800350).

Almost surely, 2^122897320 is an apocalyptic number.

122897320 is a gapful number since it is divisible by the number (10) 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 122897320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179222400).

122897320 is an abundant number, since it is smaller than the sum of its proper divisors (235547480).

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

122897320 is a wasteful number, since it uses less digits than its factorization.

122897320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827 (or 1823 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 122897320 is about 11085.9063679972. The cubic root of 122897320 is about 497.1805580441.

Subtracting from 122897320 its reverse (23798221), we obtain a palindrome (99099099).

The spelling of 122897320 in words is "one hundred twenty-two million, eight hundred ninety-seven thousand, three hundred twenty".