122829728 has 24 divisors (see below), whose sum is σ = 276367392. Its totient is φ = 52641216.

The previous prime is 122829691. The next prime is 122829739. The reversal of 122829728 is 827928221.

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 3 ways as a sum of consecutive naturals, for example, 273950 + ... + 274397.

It is an arithmetic number, because the mean of its divisors is an integer number (11515308).

Almost surely, 2^122829728 is an apocalyptic number.

It is an amenable number.

122829728 is an abundant number, since it is smaller than the sum of its proper divisors (153537664).

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

122829728 is an equidigital number, since it uses as much as digits as its factorization.

122829728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548364 (or 548356 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 122829728 is about 11082.8573932899. The cubic root of 122829728 is about 497.0893936177.

The spelling of 122829728 in words is "one hundred twenty-two million, eight hundred twenty-nine thousand, seven hundred twenty-eight".