28858728619 has 16 divisors (see below), whose sum is σ = 33096704256. Its totient is φ = 24649725600.

The previous prime is 28858728581. The next prime is 28858728623. The reversal of 28858728619 is 91682785882.

It is a cyclic number.

It is not a de Polignac number, because 28858728619 - 2⁷ = 28858728491 is a prime.

It is a super-2 number, since 2×28858728619² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28858728919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2611584 + ... + 2622610.

It is an arithmetic number, because the mean of its divisors is an integer number (2068544016).

Almost surely, 2^28858728619 is an apocalyptic number.

28858728619 is a deficient number, since it is larger than the sum of its proper divisors (4237975637).

28858728619 is a wasteful number, since it uses less digits than its factorization.

28858728619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12306.

The product of its digits is 30965760, while the sum is 64.

It can be divided in two parts, 288587 and 28619, that added together give a triangular number (317206 = T₇₉₆).

The spelling of 28858728619 in words is "twenty-eight billion, eight hundred fifty-eight million, seven hundred twenty-eight thousand, six hundred nineteen".