28447148619 has 8 divisors (see below), whose sum is σ = 42143923920. Its totient is φ = 18964765728.

The previous prime is 28447148603. The next prime is 28447148659. The reversal of 28447148619 is 91684174482.

28447148619 is a `hidden beast` number, since 2 + 8 + 4 + 4 + 7 + 14 + 8 + 619 = 666.

It is not a de Polignac number, because 28447148619 - 2⁴ = 28447148603 is a prime.

It is a super-2 number, since 2×28447148619² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28447148659) 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, 526799022 + ... + 526799075.

It is an arithmetic number, because the mean of its divisors is an integer number (5267990490).

Almost surely, 2^28447148619 is an apocalyptic number.

28447148619 is a deficient number, since it is larger than the sum of its proper divisors (13696775301).

28447148619 is a wasteful number, since it uses less digits than its factorization.

28447148619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053598106 (or 1053598100 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The spelling of 28447148619 in words is "twenty-eight billion, four hundred forty-seven million, one hundred forty-eight thousand, six hundred nineteen".