28882040 has 64 divisors (see below), whose sum is σ = 72666720. Its totient is φ = 10240000.

The previous prime is 28882039. The next prime is 28882069. The reversal of 28882040 is 4028882.

It is a junction number, because it is equal to n+sod(n) for n = 28881988 and 28882006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17240 + ... + 18840.

Almost surely, 2^28882040 is an apocalyptic number.

28882040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28882040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36333360).

28882040 is an abundant number, since it is smaller than the sum of its proper divisors (43784680).

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

28882040 is a wasteful number, since it uses less digits than its factorization.

28882040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664 (or 1660 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 28882040 is about 5374.2013360126. The cubic root of 28882040 is about 306.8145527010.

It can be divided in two parts, 288 and 82040, that added together give a palindrome (82328).

The spelling of 28882040 in words is "twenty-eight million, eight hundred eighty-two thousand, forty".