28375963 has 16 divisors (see below), whose sum is σ = 35504640. Its totient is φ = 22032000.

The previous prime is 28375961. The next prime is 28375967. The reversal of 28375963 is 36957382.

It is a cyclic number.

It is not a de Polignac number, because 28375963 - 2¹ = 28375961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28375961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30418 + ... + 31336.

It is an arithmetic number, because the mean of its divisors is an integer number (2219040).

Almost surely, 2^28375963 is an apocalyptic number.

28375963 is a deficient number, since it is larger than the sum of its proper divisors (7128677).

28375963 is a wasteful number, since it uses less digits than its factorization.

28375963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338.

The product of its digits is 272160, while the sum is 43.

The square root of 28375963 is about 5326.9093290575. The cubic root of 28375963 is about 305.0119604734.

The spelling of 28375963 in words is "twenty-eight million, three hundred seventy-five thousand, nine hundred sixty-three".