122664928 has 48 divisors (see below), whose sum is σ = 256782960. Its totient is φ = 57481216.

The previous prime is 122664901. The next prime is 122664929. The reversal of 122664928 is 829466221.

It is a super-2 number, since 2×122664928² = 30093369122490368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122664929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240738 + ... + 241246.

It is an arithmetic number, because the mean of its divisors is an integer number (5349645).

Almost surely, 2^122664928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122664928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128391480).

122664928 is an abundant number, since it is smaller than the sum of its proper divisors (134118032).

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

122664928 is a wasteful number, since it uses less digits than its factorization.

122664928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979 (or 971 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 122664928 is about 11075.4199920364. The cubic root of 122664928 is about 496.8669800428.

The spelling of 122664928 in words is "one hundred twenty-two million, six hundred sixty-four thousand, nine hundred twenty-eight".