28810882 has 4 divisors (see below), whose sum is σ = 43216326. Its totient is φ = 14405440.

The previous prime is 28810879. The next prime is 28810883. The reversal of 28810882 is 28801882.

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., 21242881 + 7568001 = 4609^2 + 2751^2 .

It is not an unprimeable number, because it can be changed into a prime (28810883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7202719 + ... + 7202722.

Almost surely, 2^28810882 is an apocalyptic number.

28810882 is a deficient number, since it is larger than the sum of its proper divisors (14405444).

28810882 is a wasteful number, since it uses less digits than its factorization.

28810882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14405443.

The product of its (nonzero) digits is 16384, while the sum is 37.

The square root of 28810882 is about 5367.5769207343. The cubic root of 28810882 is about 306.5623744814.

It can be divided in two parts, 28810 and 882, that added together give a palindrome (29692).

The spelling of 28810882 in words is "twenty-eight million, eight hundred ten thousand, eight hundred eighty-two".