28831363 has 4 divisors (see below), whose sum is σ = 31452408. Its totient is φ = 26210320.

The previous prime is 28831349. The next prime is 28831367. The reversal of 28831363 is 36313882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28831363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28831367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1310506 + ... + 1310527.

It is an arithmetic number, because the mean of its divisors is an integer number (7863102).

Almost surely, 2^28831363 is an apocalyptic number.

28831363 is a deficient number, since it is larger than the sum of its proper divisors (2621045).

28831363 is a wasteful number, since it uses less digits than its factorization.

28831363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621044.

The product of its digits is 20736, while the sum is 34.

The square root of 28831363 is about 5369.4844259016. The cubic root of 28831363 is about 306.6350000121.

The spelling of 28831363 in words is "twenty-eight million, eight hundred thirty-one thousand, three hundred sixty-three".