122564880 has 160 divisors (see below), whose sum is σ = 425865600. Its totient is φ = 32398848.

The previous prime is 122564873. The next prime is 122564881. The reversal of 122564880 is 88465221.

122564880 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 648 + 8 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (122564881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 386482 + ... + 386798.

It is an arithmetic number, because the mean of its divisors is an integer number (2661660).

Almost surely, 2^122564880 is an apocalyptic number.

122564880 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 122564880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212932800).

122564880 is an abundant number, since it is smaller than the sum of its proper divisors (303300720).

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

122564880 is a wasteful number, since it uses less digits than its factorization.

122564880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 122564880 is about 11070.9024022435. The cubic root of 122564880 is about 496.7318583756.

The spelling of 122564880 in words is "one hundred twenty-two million, five hundred sixty-four thousand, eight hundred eighty".