28964965 has 4 divisors (see below), whose sum is σ = 34757964. Its totient is φ = 23171968.

The previous prime is 28964953. The next prime is 28964993. The reversal of 28964965 is 56946982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56946982 = 2 ⋅28473491.

It can be written as a sum of positive squares in 2 ways, for example, as 7230721 + 21734244 = 2689^2 + 4662^2 .

It is a cyclic number.

It is not a de Polignac number, because 28964965 - 2²³ = 20576357 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 Duffinian 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, 2896492 + ... + 2896501.

It is an arithmetic number, because the mean of its divisors is an integer number (8689491).

Almost surely, 2^28964965 is an apocalyptic number.

It is an amenable number.

28964965 is a deficient number, since it is larger than the sum of its proper divisors (5792999).

28964965 is an equidigital number, since it uses as much as digits as its factorization.

28964965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5792998.

The product of its digits is 933120, while the sum is 49.

The square root of 28964965 is about 5381.9109059887. The cubic root of 28964965 is about 307.1079101602.

It can be divided in two parts, 28964 and 965, that added together give a square (29929 = 173²).

The spelling of 28964965 in words is "twenty-eight million, nine hundred sixty-four thousand, nine hundred sixty-five".