28122896 has 20 divisors (see below), whose sum is σ = 57693852. Its totient is φ = 13234176.

The previous prime is 28122893. The next prime is 28122901. The reversal of 28122896 is 69822182.

It can be written as a sum of positive squares in 2 ways, for example, as 16289296 + 11833600 = 4036^2 + 3440^2 .

It is not an unprimeable number, because it can be changed into a prime (28122893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51425 + ... + 51968.

Almost surely, 2^28122896 is an apocalyptic number.

It is an amenable number.

28122896 is an abundant number, since it is smaller than the sum of its proper divisors (29570956).

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

28122896 is a wasteful number, since it uses less digits than its factorization.

28122896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103418 (or 103412 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 28122896 is about 5303.1024881667. The cubic root of 28122896 is about 304.1025162100.

The spelling of 28122896 in words is "twenty-eight million, one hundred twenty-two thousand, eight hundred ninety-six".