28957282 has 4 divisors (see below), whose sum is σ = 43435926. Its totient is φ = 14478640.

The previous prime is 28957277. The next prime is 28957301. The reversal of 28957282 is 28275982.

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., 27678121 + 1279161 = 5261^2 + 1131^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7239319 + ... + 7239322.

Almost surely, 2^28957282 is an apocalyptic number.

28957282 is a deficient number, since it is larger than the sum of its proper divisors (14478644).

28957282 is a wasteful number, since it uses less digits than its factorization.

28957282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14478643.

The product of its digits is 161280, while the sum is 43.

The square root of 28957282 is about 5381.1970787177. The cubic root of 28957282 is about 307.0807541492.

The spelling of 28957282 in words is "twenty-eight million, nine hundred fifty-seven thousand, two hundred eighty-two".