28288282 has 32 divisors (see below), whose sum is σ = 48470400. Its totient is φ = 12264000.

The previous prime is 28288261. The next prime is 28288291.

28288282 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64219 + ... + 64657.

It is an arithmetic number, because the mean of its divisors is an integer number (1514700).

Almost surely, 2^28288282 is an apocalyptic number.

28288282 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28288282 is a deficient number, since it is larger than the sum of its proper divisors (20182118).

28288282 is a wasteful number, since it uses less digits than its factorization.

28288282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582.

The product of its digits is 65536, while the sum is 40.

The square root of 28288282 is about 5318.6729547886. The cubic root of 28288282 is about 304.6974766157.

The spelling of 28288282 in words is "twenty-eight million, two hundred eighty-eight thousand, two hundred eighty-two".