28749763 has 8 divisors (see below), whose sum is σ = 32899680. Its totient is φ = 24610560.

The previous prime is 28749719. The next prime is 28749811. The reversal of 28749763 is 36794782.

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 28749763 - 2⁹ = 28749251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28749713) 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, 4293 + ... + 8713.

It is an arithmetic number, because the mean of its divisors is an integer number (4112460).

Almost surely, 2^28749763 is an apocalyptic number.

28749763 is a deficient number, since it is larger than the sum of its proper divisors (4149917).

28749763 is an equidigital number, since it uses as much as digits as its factorization.

28749763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5357.

The product of its digits is 508032, while the sum is 46.

The square root of 28749763 is about 5361.8805469723. The cubic root of 28749763 is about 306.3454419728.

The spelling of 28749763 in words is "twenty-eight million, seven hundred forty-nine thousand, seven hundred sixty-three".