28013882 has 8 divisors (see below), whose sum is σ = 45253236. Its totient is φ = 12929472.

The previous prime is 28013879. The next prime is 28013893. The reversal of 28013882 is 28831082.

It can be written as a sum of positive squares in 2 ways, for example, as 26739241 + 1274641 = 5171^2 + 1129^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538703 + ... + 538754.

Almost surely, 2^28013882 is an apocalyptic number.

28013882 is a deficient number, since it is larger than the sum of its proper divisors (17239354).

28013882 is a wasteful number, since it uses less digits than its factorization.

28013882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077472.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 28013882 is about 5292.8141852893. The cubic root of 28013882 is about 303.7090721442.

The spelling of 28013882 in words is "twenty-eight million, thirteen thousand, eight hundred eighty-two".