122728634 has 24 divisors (see below), whose sum is σ = 215460000. Its totient is φ = 52276056.

The previous prime is 122728603. The next prime is 122728637. The reversal of 122728634 is 436827221.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122728594 and 122728603.

It is not an unprimeable number, because it can be changed into a prime (122728637) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 12617 + ... + 20115.

It is an arithmetic number, because the mean of its divisors is an integer number (8977500).

Almost surely, 2^122728634 is an apocalyptic number.

122728634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

122728634 is a deficient number, since it is larger than the sum of its proper divisors (92731366).

122728634 is a wasteful number, since it uses less digits than its factorization.

122728634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7682 (or 7675 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 122728634 is about 11078.2956270358. The cubic root of 122728634 is about 496.9529810706.

The spelling of 122728634 in words is "one hundred twenty-two million, seven hundred twenty-eight thousand, six hundred thirty-four".