28882872 has 32 divisors (see below), whose sum is σ = 80230800. Its totient is φ = 9627552.

The previous prime is 28882859. The next prime is 28882873. The reversal of 28882872 is 27828882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28882873) 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, 66643 + ... + 67074.

Almost surely, 2^28882872 is an apocalyptic number.

It is an amenable number.

28882872 is an abundant number, since it is smaller than the sum of its proper divisors (51347928).

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

28882872 is a wasteful number, since it uses less digits than its factorization.

28882872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133732 (or 133722 counting only the distinct ones).

The product of its digits is 229376, while the sum is 45.

The square root of 28882872 is about 5374.2787423058. The cubic root of 28882872 is about 306.8174987908.

The spelling of 28882872 in words is "twenty-eight million, eight hundred eighty-two thousand, eight hundred seventy-two".