28679877 has 12 divisors (see below), whose sum is σ = 41562924. Its totient is φ = 19056960.

The previous prime is 28679863. The next prime is 28679879. The reversal of 28679877 is 77897682.

It can be written as a sum of positive squares in 2 ways, for example, as 6155361 + 22524516 = 2481^2 + 4746^2 .

It is not a de Polignac number, because 28679877 - 2⁸ = 28679621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28679879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2274 + ... + 7907.

It is an arithmetic number, because the mean of its divisors is an integer number (3463577).

Almost surely, 2^28679877 is an apocalyptic number.

It is an amenable number.

28679877 is a deficient number, since it is larger than the sum of its proper divisors (12883047).

28679877 is a wasteful number, since it uses less digits than its factorization.

28679877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10500 (or 10497 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 54.

The square root of 28679877 is about 5355.3596517881. The cubic root of 28679877 is about 306.0970152467.

It can be divided in two parts, 286 and 79877, that multiplied together give a palindrome (22844822).

The spelling of 28679877 in words is "twenty-eight million, six hundred seventy-nine thousand, eight hundred seventy-seven".