28439363 has 8 divisors (see below), whose sum is σ = 29257200. Its totient is φ = 27627520.

The previous prime is 28439353. The next prime is 28439377. The reversal of 28439363 is 36393482.

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 28439363 - 2⁸ = 28439107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28439303) 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, 9188 + ... + 11886.

It is an arithmetic number, because the mean of its divisors is an integer number (3657150).

Almost surely, 2^28439363 is an apocalyptic number.

28439363 is a deficient number, since it is larger than the sum of its proper divisors (817837).

28439363 is a wasteful number, since it uses less digits than its factorization.

28439363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2997.

The product of its digits is 93312, while the sum is 38.

The square root of 28439363 is about 5332.8569266389. The cubic root of 28439363 is about 305.2389527593.

The spelling of 28439363 in words is "twenty-eight million, four hundred thirty-nine thousand, three hundred sixty-three".