28811882 has 8 divisors (see below), whose sum is σ = 47146752. Its totient is φ = 13096300.

The previous prime is 28811869. The next prime is 28811891.

28811882 is nontrivially palindromic in base 10.

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, 654794 + ... + 654837.

It is an arithmetic number, because the mean of its divisors is an integer number (5893344).

Almost surely, 2^28811882 is an apocalyptic number.

28811882 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28811882 is a deficient number, since it is larger than the sum of its proper divisors (18334870).

28811882 is a wasteful number, since it uses less digits than its factorization.

28811882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309644.

The product of its digits is 16384, while the sum is 38.

The square root of 28811882 is about 5367.6700718282. The cubic root of 28811882 is about 306.5659212758.

The spelling of 28811882 in words is "twenty-eight million, eight hundred eleven thousand, eight hundred eighty-two".