122844720 has 80 divisors (see below), whose sum is σ = 403233120. Its totient is φ = 30830592.

The previous prime is 122844707. The next prime is 122844739. The reversal of 122844720 is 27448221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10975 + ... + 19134.

It is an arithmetic number, because the mean of its divisors is an integer number (5040414).

Almost surely, 2^122844720 is an apocalyptic number.

122844720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122844720 is an abundant number, since it is smaller than the sum of its proper divisors (280388400).

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

122844720 is a wasteful number, since it uses less digits than its factorization.

122844720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30142 (or 30136 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 122844720 is about 11083.5337325241. The cubic root of 122844720 is about 497.1096169006.

The spelling of 122844720 in words is "one hundred twenty-two million, eight hundred forty-four thousand, seven hundred twenty".