122189628 has 24 divisors (see below), whose sum is σ = 311028480. Its totient is φ = 37027120.

The previous prime is 122189611. The next prime is 122189629. The reversal of 122189628 is 826981221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122189629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462708 + ... + 462971.

It is an arithmetic number, because the mean of its divisors is an integer number (12959520).

Almost surely, 2^122189628 is an apocalyptic number.

It is an amenable number.

122189628 is an abundant number, since it is smaller than the sum of its proper divisors (188838852).

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

122189628 is a wasteful number, since it uses less digits than its factorization.

122189628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925697 (or 925695 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 122189628 is about 11053.9417403929. The cubic root of 122189628 is about 496.2243987664.

The spelling of 122189628 in words is "one hundred twenty-two million, one hundred eighty-nine thousand, six hundred twenty-eight".