28826780 has 12 divisors (see below), whose sum is σ = 60536280. Its totient is φ = 11530704.

The previous prime is 28826779. The next prime is 28826801. The reversal of 28826780 is 8762882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 720650 + ... + 720689.

It is an arithmetic number, because the mean of its divisors is an integer number (5044690).

Almost surely, 2^28826780 is an apocalyptic number.

28826780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28826780 is an abundant number, since it is smaller than the sum of its proper divisors (31709500).

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

28826780 is a wasteful number, since it uses less digits than its factorization.

28826780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441348 (or 1441346 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 28826780 is about 5369.0576454346. The cubic root of 28826780 is about 306.6187517032.

The spelling of 28826780 in words is "twenty-eight million, eight hundred twenty-six thousand, seven hundred eighty".