28765122 has 16 divisors (see below), whose sum is σ = 60914592. Its totient is φ = 9024320.

The previous prime is 28765097. The next prime is 28765141. The reversal of 28765122 is 22156782.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140904 + ... + 141107.

It is an arithmetic number, because the mean of its divisors is an integer number (3807162).

Almost surely, 2^28765122 is an apocalyptic number.

28765122 is an abundant number, since it is smaller than the sum of its proper divisors (32149470).

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

28765122 is a wasteful number, since it uses less digits than its factorization.

28765122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282033.

The product of its digits is 13440, while the sum is 33.

The square root of 28765122 is about 5363.3125957751. The cubic root of 28765122 is about 306.3999852863.

The spelling of 28765122 in words is "twenty-eight million, seven hundred sixty-five thousand, one hundred twenty-two".