28965277 has 4 divisors (see below), whose sum is σ = 31598496. Its totient is φ = 26332060.

The previous prime is 28965269. The next prime is 28965281. The reversal of 28965277 is 77256982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28965277 - 2³ = 28965269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28965077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1316593 + ... + 1316614.

It is an arithmetic number, because the mean of its divisors is an integer number (7899624).

Almost surely, 2^28965277 is an apocalyptic number.

It is an amenable number.

28965277 is a deficient number, since it is larger than the sum of its proper divisors (2633219).

28965277 is a wasteful number, since it uses less digits than its factorization.

28965277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633218.

The product of its digits is 423360, while the sum is 46.

The square root of 28965277 is about 5381.9398918977. The cubic root of 28965277 is about 307.1090128409.

The spelling of 28965277 in words is "twenty-eight million, nine hundred sixty-five thousand, two hundred seventy-seven".