28785763 has 8 divisors (see below), whose sum is σ = 29845376. Its totient is φ = 27734400.

The previous prime is 28785749. The next prime is 28785767. The reversal of 28785763 is 36758782.

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 28785763 - 2²¹ = 26688611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28785767) 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, 5545 + ... + 9397.

It is an arithmetic number, because the mean of its divisors is an integer number (3730672).

Almost surely, 2^28785763 is an apocalyptic number.

28785763 is a deficient number, since it is larger than the sum of its proper divisors (1059613).

28785763 is a wasteful number, since it uses less digits than its factorization.

28785763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4125.

The product of its digits is 564480, while the sum is 46.

The square root of 28785763 is about 5365.2365278709. The cubic root of 28785763 is about 306.4732556166.

The spelling of 28785763 in words is "twenty-eight million, seven hundred eighty-five thousand, seven hundred sixty-three".