28753863 has 8 divisors (see below), whose sum is σ = 38508288. Its totient is φ = 19084344.

The previous prime is 28753861. The next prime is 28753903. The reversal of 28753863 is 36835782.

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

It is not a de Polignac number, because 28753863 - 2¹ = 28753861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28753861) 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, 20431 + ... + 21792.

It is an arithmetic number, because the mean of its divisors is an integer number (4813536).

Almost surely, 2^28753863 is an apocalyptic number.

28753863 is a deficient number, since it is larger than the sum of its proper divisors (9754425).

28753863 is a wasteful number, since it uses less digits than its factorization.

28753863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42453.

The product of its digits is 241920, while the sum is 42.

The square root of 28753863 is about 5362.2628618896. The cubic root of 28753863 is about 306.3600039086.

The spelling of 28753863 in words is "twenty-eight million, seven hundred fifty-three thousand, eight hundred sixty-three".