28682831 has 8 divisors (see below), whose sum is σ = 29626560. Its totient is φ = 27753088.

The previous prime is 28682813. The next prime is 28682867. The reversal of 28682831 is 13828682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28682831 is a prime.

It is a super-2 number, since 2×28682831² = 1645409588349122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28682431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 755 + ... + 7611.

It is an arithmetic number, because the mean of its divisors is an integer number (3703320).

Almost surely, 2^28682831 is an apocalyptic number.

28682831 is a deficient number, since it is larger than the sum of its proper divisors (943729).

28682831 is an equidigital number, since it uses as much as digits as its factorization.

28682831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6993.

The product of its digits is 36864, while the sum is 38.

The square root of 28682831 is about 5355.6354431570. The cubic root of 28682831 is about 306.1075241195.

The spelling of 28682831 in words is "twenty-eight million, six hundred eighty-two thousand, eight hundred thirty-one".