28355963 has 8 divisors (see below), whose sum is σ = 29291328. Its totient is φ = 27433224.

The previous prime is 28355953. The next prime is 28355981. The reversal of 28355963 is 36955382.

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

It is a cyclic number.

It is not a de Polignac number, because 28355963 - 2¹⁰ = 28354939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28355963.

It is not an unprimeable number, because it can be changed into a prime (28355953) 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, 1520 + ... + 7682.

It is an arithmetic number, because the mean of its divisors is an integer number (3661416).

Almost surely, 2^28355963 is an apocalyptic number.

28355963 is a deficient number, since it is larger than the sum of its proper divisors (935365).

28355963 is a wasteful number, since it uses less digits than its factorization.

28355963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6313.

The product of its digits is 194400, while the sum is 41.

The square root of 28355963 is about 5325.0317369946. The cubic root of 28355963 is about 304.9402839284.

The spelling of 28355963 in words is "twenty-eight million, three hundred fifty-five thousand, nine hundred sixty-three".