28283722 has 4 divisors (see below), whose sum is σ = 42425586. Its totient is φ = 14141860.

The previous prime is 28283719. The next prime is 28283741. The reversal of 28283722 is 22738282.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26822041 + 1461681 = 5179^2 + 1209^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7070929 + ... + 7070932.

Almost surely, 2^28283722 is an apocalyptic number.

28283722 is a deficient number, since it is larger than the sum of its proper divisors (14141864).

28283722 is a wasteful number, since it uses less digits than its factorization.

28283722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14141863.

The product of its digits is 21504, while the sum is 34.

The square root of 28283722 is about 5318.2442591517. The cubic root of 28283722 is about 304.6811035799.

The spelling of 28283722 in words is "twenty-eight million, two hundred eighty-three thousand, seven hundred twenty-two".