28075531393 has 96 divisors (see below), whose sum is σ = 38338379520. Its totient is φ = 19959436800.

The previous prime is 28075531391. The next prime is 28075531397. The reversal of 28075531393 is 39313557082.

It is not a de Polignac number, because 28075531393 - 2¹ = 28075531391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28075531391) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 101355571 + ... + 101355847.

It is an arithmetic number, because the mean of its divisors is an integer number (399358120).

Almost surely, 2^28075531393 is an apocalyptic number.

It is an amenable number.

28075531393 is a deficient number, since it is larger than the sum of its proper divisors (10262848127).

28075531393 is a wasteful number, since it uses less digits than its factorization.

28075531393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 28075531393 in words is "twenty-eight billion, seventy-five million, five hundred thirty-one thousand, three hundred ninety-three".