28856322 has 36 divisors (see below), whose sum is σ = 68727750. Its totient is φ = 8743680.

The previous prime is 28856309. The next prime is 28856323. The reversal of 28856322 is 22365882.

28856322 is a `hidden beast` number, since 288 + 56 + 322 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26842761 + 2013561 = 5181^2 + 1419^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28856323) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4447 + ... + 8802.

Almost surely, 2^28856322 is an apocalyptic number.

28856322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28856322 is an abundant number, since it is smaller than the sum of its proper divisors (39871428).

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

28856322 is a wasteful number, since it uses less digits than its factorization.

28856322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13279 (or 13265 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 28856322 is about 5371.8080754993. The cubic root of 28856322 is about 306.7234580287.

The spelling of 28856322 in words is "twenty-eight million, eight hundred fifty-six thousand, three hundred twenty-two".