28656122 has 16 divisors (see below), whose sum is σ = 47310912. Its totient is φ = 12909120.

The previous prime is 28656107. The next prime is 28656139. The reversal of 28656122 is 22165682.

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, 3278 + ... + 8249.

It is an arithmetic number, because the mean of its divisors is an integer number (2956932).

Almost surely, 2^28656122 is an apocalyptic number.

28656122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28656122 is a deficient number, since it is larger than the sum of its proper divisors (18654790).

28656122 is a wasteful number, since it uses less digits than its factorization.

28656122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11653.

The product of its digits is 11520, while the sum is 32.

The square root of 28656122 is about 5353.1413207574. The cubic root of 28656122 is about 306.0124804456.

The spelling of 28656122 in words is "twenty-eight million, six hundred fifty-six thousand, one hundred twenty-two".