28276722 has 32 divisors (see below), whose sum is σ = 63043200. Its totient is φ = 9394704.

The previous prime is 28276697. The next prime is 28276723. The reversal of 28276722 is 22767282.

It is not an unprimeable number, because it can be changed into a prime (28276723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20779 + ... + 22097.

It is an arithmetic number, because the mean of its divisors is an integer number (1970100).

Almost surely, 2^28276722 is an apocalyptic number.

28276722 is an abundant number, since it is smaller than the sum of its proper divisors (34766478).

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

28276722 is a wasteful number, since it uses less digits than its factorization.

28276722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1727 (or 1721 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 28276722 is about 5317.5861064961. The cubic root of 28276722 is about 304.6559661093.

The spelling of 28276722 in words is "twenty-eight million, two hundred seventy-six thousand, seven hundred twenty-two".