28832820 has 48 divisors (see below), whose sum is σ = 80965248. Its totient is φ = 7666560.

The previous prime is 28832819. The next prime is 28832827. The reversal of 28832820 is 2823882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28832827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39297 + ... + 40023.

It is an arithmetic number, because the mean of its divisors is an integer number (1686776).

Almost surely, 2^28832820 is an apocalyptic number.

28832820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28832820 is an abundant number, since it is smaller than the sum of its proper divisors (52132428).

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

28832820 is a wasteful number, since it uses less digits than its factorization.

28832820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400 (or 1398 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 28832820 is about 5369.6200982937. The cubic root of 28832820 is about 306.6401652167.

The spelling of 28832820 in words is "twenty-eight million, eight hundred thirty-two thousand, eight hundred twenty".