28131076 has 12 divisors (see below), whose sum is σ = 49427280. Its totient is φ = 14009000.

The previous prime is 28131041. The next prime is 28131079. The reversal of 28131076 is 67013182.

It is not an unprimeable number, because it can be changed into a prime (28131079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13006 + ... + 15013.

It is an arithmetic number, because the mean of its divisors is an integer number (4118940).

Almost surely, 2^28131076 is an apocalyptic number.

It is an amenable number.

28131076 is a deficient number, since it is larger than the sum of its proper divisors (21296204).

28131076 is a wasteful number, since it uses less digits than its factorization.

28131076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28274 (or 28272 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 28131076 is about 5303.8736787371. The cubic root of 28131076 is about 304.1319977333.

The spelling of 28131076 in words is "twenty-eight million, one hundred thirty-one thousand, seventy-six".