122687628 has 24 divisors (see below), whose sum is σ = 327167232. Its totient is φ = 35053584.

The previous prime is 122687627. The next prime is 122687639. The reversal of 122687628 is 826786221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 122687628.

It is not an unprimeable number, because it can be changed into a prime (122687627) 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, 730200 + ... + 730367.

It is an arithmetic number, because the mean of its divisors is an integer number (13631968).

Almost surely, 2^122687628 is an apocalyptic number.

It is an amenable number.

122687628 is an abundant number, since it is smaller than the sum of its proper divisors (204479604).

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

122687628 is a wasteful number, since it uses less digits than its factorization.

122687628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460581 (or 1460579 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 122687628 is about 11076.4447364667. Note that the first 3 decimals coincide. The cubic root of 122687628 is about 496.8976277184.

The spelling of 122687628 in words is "one hundred twenty-two million, six hundred eighty-seven thousand, six hundred twenty-eight".