28299056 has 20 divisors (see below), whose sum is σ = 57715800. Its totient is φ = 13404672.

The previous prime is 28299053. The next prime is 28299091. The reversal of 28299056 is 65099282.

It is a super-2 number, since 2×28299056² = 1601673140982272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28299053) 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, 46241 + ... + 46848.

It is an arithmetic number, because the mean of its divisors is an integer number (2885790).

Almost surely, 2^28299056 is an apocalyptic number.

It is an amenable number.

28299056 is an abundant number, since it is smaller than the sum of its proper divisors (29416744).

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

28299056 is a wasteful number, since it uses less digits than its factorization.

28299056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93116 (or 93110 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 28299056 is about 5319.6857050018. The cubic root of 28299056 is about 304.7361545146.

The spelling of 28299056 in words is "twenty-eight million, two hundred ninety-nine thousand, fifty-six".