28681079 has 8 divisors (see below), whose sum is σ = 32960928. Its totient is φ = 24446880.

The previous prime is 28681073. The next prime is 28681097. The reversal of 28681079 is 97018682.

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

It is a cyclic number.

It is not a de Polignac number, because 28681079 - 2⁴ = 28681063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28681073) 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, 10052 + ... + 12585.

It is an arithmetic number, because the mean of its divisors is an integer number (4120116).

Almost surely, 2^28681079 is an apocalyptic number.

28681079 is a deficient number, since it is larger than the sum of its proper divisors (4279849).

28681079 is a wasteful number, since it uses less digits than its factorization.

28681079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22825.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 28681079 is about 5355.4718746344. The cubic root of 28681079 is about 306.1012914560.

The spelling of 28681079 in words is "twenty-eight million, six hundred eighty-one thousand, seventy-nine".