28682706 has 64 divisors (see below), whose sum is σ = 66382848. Its totient is φ = 8183808.

The previous prime is 28682701. The next prime is 28682713. The reversal of 28682706 is 60728682.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (28682701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128511 + ... + 128733.

It is an arithmetic number, because the mean of its divisors is an integer number (1037232).

Almost surely, 2^28682706 is an apocalyptic number.

28682706 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 28682706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33191424).

28682706 is an abundant number, since it is smaller than the sum of its proper divisors (37700142).

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

28682706 is a wasteful number, since it uses less digits than its factorization.

28682706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 28682706 is about 5355.6237731939. The cubic root of 28682706 is about 306.1070794459.

The spelling of 28682706 in words is "twenty-eight million, six hundred eighty-two thousand, seven hundred six".