28645835619 has 8 divisors (see below), whose sum is σ = 38208693952. Its totient is φ = 19090100520.

The previous prime is 28645835593. The next prime is 28645835623. The reversal of 28645835619 is 91653854682.

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

It is not a de Polignac number, because 28645835619 - 2⁵ = 28645835587 is a prime.

It is a super-2 number, since 2×28645835619² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28645835639) 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, 1771417 + ... + 1787514.

It is an arithmetic number, because the mean of its divisors is an integer number (4776086744).

Almost surely, 2^28645835619 is an apocalyptic number.

28645835619 is a deficient number, since it is larger than the sum of its proper divisors (9562858333).

28645835619 is a wasteful number, since it uses less digits than its factorization.

28645835619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3561617.

The product of its digits is 12441600, while the sum is 57.

The spelling of 28645835619 in words is "twenty-eight billion, six hundred forty-five million, eight hundred thirty-five thousand, six hundred nineteen".