28976845 has 4 divisors (see below), whose sum is σ = 34772220. Its totient is φ = 23181472.

The previous prime is 28976813. The next prime is 28976851. The reversal of 28976845 is 54867982.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18198756 + 10778089 = 4266^2 + 3283^2 .

It is a cyclic number.

It is not a de Polignac number, because 28976845 - 2⁵ = 28976813 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 2897680 + ... + 2897689.

It is an arithmetic number, because the mean of its divisors is an integer number (8693055).

Almost surely, 2^28976845 is an apocalyptic number.

It is an amenable number.

28976845 is a deficient number, since it is larger than the sum of its proper divisors (5795375).

28976845 is an equidigital number, since it uses as much as digits as its factorization.

28976845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5795374.

The product of its digits is 967680, while the sum is 49.

The square root of 28976845 is about 5383.0144900418. The cubic root of 28976845 is about 307.1498912603.

The spelling of 28976845 in words is "twenty-eight million, nine hundred seventy-six thousand, eight hundred forty-five".