28876782 has 16 divisors (see below), whose sum is σ = 63004032. Its totient is φ = 8750520.

The previous prime is 28876781. The next prime is 28876807. The reversal of 28876782 is 28767882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28876781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218698 + ... + 218829.

It is an arithmetic number, because the mean of its divisors is an integer number (3937752).

Almost surely, 2^28876782 is an apocalyptic number.

28876782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28876782 is an abundant number, since it is smaller than the sum of its proper divisors (34127250).

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

28876782 is a wasteful number, since it uses less digits than its factorization.

28876782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437543.

The product of its digits is 602112, while the sum is 48.

The square root of 28876782 is about 5373.7121247793. The cubic root of 28876782 is about 306.7959329541.

Subtracting from 28876782 its reverse (28767882), we obtain a square (108900 = 330²).

It can be divided in two parts, 2887 and 6782, that added together give a palindrome (9669).

The spelling of 28876782 in words is "twenty-eight million, eight hundred seventy-six thousand, seven hundred eighty-two".