28244907819 has 16 divisors (see below), whose sum is σ = 42975236640. Its totient is φ = 18321020640.

The previous prime is 28244907811. The next prime is 28244907827. The reversal of 28244907819 is 91870944282.

28244907819 is a `hidden beast` number, since 2 + 82 + 4 + 490 + 78 + 1 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (28244907811) and next prime (28244907827).

It is not a de Polignac number, because 28244907819 - 2³ = 28244907811 is a prime.

It is a super-2 number, since 2×28244907819² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28244907811) 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, 14135592 + ... + 14137589.

It is an arithmetic number, because the mean of its divisors is an integer number (2685952290).

Almost surely, 2^28244907819 is an apocalyptic number.

28244907819 is a deficient number, since it is larger than the sum of its proper divisors (14730328821).

28244907819 is a wasteful number, since it uses less digits than its factorization.

28244907819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28273227 (or 28273221 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 28244907819 in words is "twenty-eight billion, two hundred forty-four million, nine hundred seven thousand, eight hundred nineteen".