28682180 has 12 divisors (see below), whose sum is σ = 60232620. Its totient is φ = 11472864.

The previous prime is 28682167. The next prime is 28682207. The reversal of 28682180 is 8128682.

It can be written as a sum of positive squares in 2 ways, for example, as 21381376 + 7300804 = 4624^2 + 2702^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28682180.

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, 717035 + ... + 717074.

It is an arithmetic number, because the mean of its divisors is an integer number (5019385).

Almost surely, 2^28682180 is an apocalyptic number.

28682180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28682180 is an abundant number, since it is smaller than the sum of its proper divisors (31550440).

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

28682180 is a wasteful number, since it uses less digits than its factorization.

28682180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434118 (or 1434116 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 28682180 is about 5355.5746657105. The cubic root of 28682180 is about 306.1052082450.

The spelling of 28682180 in words is "twenty-eight million, six hundred eighty-two thousand, one hundred eighty".