28133398071 has 12 divisors (see below), whose sum is σ = 40678483248. Its totient is φ = 18736512864.

The previous prime is 28133398063. The next prime is 28133398079. The reversal of 28133398071 is 17089333182.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28133398063) and next prime (28133398079).

It is not a de Polignac number, because 28133398071 - 2³ = 28133398063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28133398079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1581150 + ... + 1598843.

It is an arithmetic number, because the mean of its divisors is an integer number (3389873604).

Almost surely, 2^28133398071 is an apocalyptic number.

28133398071 is a deficient number, since it is larger than the sum of its proper divisors (12545085177).

28133398071 is a wasteful number, since it uses less digits than its factorization.

28133398071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3180982 (or 3180979 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 28133398071 in words is "twenty-eight billion, one hundred thirty-three million, three hundred ninety-eight thousand, seventy-one".