28976339 has 4 divisors (see below), whose sum is σ = 33115824. Its totient is φ = 24836856.

The previous prime is 28976333. The next prime is 28976371. The reversal of 28976339 is 93367982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28976339 - 2²⁰ = 27927763 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28976293 and 28976302.

It is not an unprimeable number, because it can be changed into a prime (28976333) 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, 2069732 + ... + 2069745.

It is an arithmetic number, because the mean of its divisors is an integer number (8278956).

Almost surely, 2^28976339 is an apocalyptic number.

28976339 is a deficient number, since it is larger than the sum of its proper divisors (4139485).

28976339 is an equidigital number, since it uses as much as digits as its factorization.

28976339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139484.

The product of its digits is 489888, while the sum is 47.

The square root of 28976339 is about 5382.9674901489. The cubic root of 28976339 is about 307.1481034104.

The spelling of 28976339 in words is "twenty-eight million, nine hundred seventy-six thousand, three hundred thirty-nine".