28865882 has 4 divisors (see below), whose sum is σ = 43298826. Its totient is φ = 14432940.

The previous prime is 28865861. The next prime is 28865887. The reversal of 28865882 is 28856882.

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., 17380561 + 11485321 = 4169^2 + 3389^2 .

It is not an unprimeable number, because it can be changed into a prime (28865887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7216469 + ... + 7216472.

Almost surely, 2^28865882 is an apocalyptic number.

28865882 is a deficient number, since it is larger than the sum of its proper divisors (14432944).

28865882 is a wasteful number, since it uses less digits than its factorization.

28865882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14432943.

The product of its digits is 491520, while the sum is 47.

The square root of 28865882 is about 5372.6978325605. The cubic root of 28865882 is about 306.7573264303.

The spelling of 28865882 in words is "twenty-eight million, eight hundred sixty-five thousand, eight hundred eighty-two".