28920882 has 16 divisors (see below), whose sum is σ = 57965472. Its totient is φ = 9619680.

The previous prime is 28920877. The next prime is 28920883. The reversal of 28920882 is 28802982.

It is a self number, because there is not a number n which added to its sum of digits gives 28920882.

It is not an unprimeable number, because it can be changed into a prime (28920883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1963 + ... + 7854.

It is an arithmetic number, because the mean of its divisors is an integer number (3622842).

Almost surely, 2^28920882 is an apocalyptic number.

28920882 is an abundant number, since it is smaller than the sum of its proper divisors (29044590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28920882 is a wasteful number, since it uses less digits than its factorization.

28920882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10313.

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 28920882 is about 5377.8138681066. The cubic root of 28920882 is about 306.9520308999.

The spelling of 28920882 in words is "twenty-eight million, nine hundred twenty thousand, eight hundred eighty-two".