28882644 has 48 divisors (see below), whose sum is σ = 79110528. Its totient is φ = 8028288.

The previous prime is 28882621. The next prime is 28882657. The reversal of 28882644 is 44628882.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 28882596 and 28882605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1539 + ... + 7754.

It is an arithmetic number, because the mean of its divisors is an integer number (1648136).

Almost surely, 2^28882644 is an apocalyptic number.

It is an amenable number.

28882644 is an abundant number, since it is smaller than the sum of its proper divisors (50227884).

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

28882644 is a wasteful number, since it uses less digits than its factorization.

28882644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9344 (or 9342 counting only the distinct ones).

The product of its digits is 196608, while the sum is 42.

The square root of 28882644 is about 5374.2575301152. The cubic root of 28882644 is about 306.8166914545.

The spelling of 28882644 in words is "twenty-eight million, eight hundred eighty-two thousand, six hundred forty-four".