28965963 has 8 divisors (see below), whose sum is σ = 41592208. Its totient is φ = 17825184.

The previous prime is 28965949. The next prime is 28966009. The reversal of 28965963 is 36956982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28965963 - 2⁸ = 28965707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28965913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371320 + ... + 371397.

It is an arithmetic number, because the mean of its divisors is an integer number (5199026).

Almost surely, 2^28965963 is an apocalyptic number.

28965963 is a deficient number, since it is larger than the sum of its proper divisors (12626245).

28965963 is a wasteful number, since it uses less digits than its factorization.

28965963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742733.

The product of its digits is 699840, while the sum is 48.

The square root of 28965963 is about 5382.0036231872. The cubic root of 28965963 is about 307.1114372969. Note that the first 3 decimals are identical.

The spelling of 28965963 in words is "twenty-eight million, nine hundred sixty-five thousand, nine hundred sixty-three".