28028574131 has 2 divisors, whose sum is σ = 28028574132. Its totient is φ = 28028574130.

The previous prime is 28028574053. The next prime is 28028574163. The reversal of 28028574131 is 13147582082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28028574131 - 2³⁴ = 10848704947 is a prime.

It is a super-2 number, since 2×28028574131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28028574031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14014287065 + 14014287066.

It is an arithmetic number, because the mean of its divisors is an integer number (14014287066).

Almost surely, 2^28028574131 is an apocalyptic number.

28028574131 is a deficient number, since it is larger than the sum of its proper divisors (1).

28028574131 is an equidigital number, since it uses as much as digits as its factorization.

28028574131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 28028574131 in words is "twenty-eight billion, twenty-eight million, five hundred seventy-four thousand, one hundred thirty-one".