28752879 has 8 divisors (see below), whose sum is σ = 38416000. Its totient is φ = 19129176.

The previous prime is 28752859. The next prime is 28752887. The reversal of 28752879 is 97825782.

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

It is not a de Polignac number, because 28752879 - 2⁵ = 28752847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28752859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8107 + ... + 11100.

It is an arithmetic number, because the mean of its divisors is an integer number (4802000).

Almost surely, 2^28752879 is an apocalyptic number.

28752879 is a deficient number, since it is larger than the sum of its proper divisors (9663121).

28752879 is a wasteful number, since it uses less digits than its factorization.

28752879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19709.

The product of its digits is 564480, while the sum is 48.

The square root of 28752879 is about 5362.1711087954. The cubic root of 28752879 is about 306.3565091703.

The spelling of 28752879 in words is "twenty-eight million, seven hundred fifty-two thousand, eight hundred seventy-nine".