28062931897 has 24 divisors (see below), whose sum is σ = 37964362688. Its totient is φ = 20185117920.

The previous prime is 28062931891. The next prime is 28062931901. The reversal of 28062931897 is 79813926082.

It is not a de Polignac number, because 28062931897 - 2²⁷ = 27928714169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28062931891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1263303 + ... + 1285324.

Almost surely, 2^28062931897 is an apocalyptic number.

It is an amenable number.

28062931897 is a deficient number, since it is larger than the sum of its proper divisors (9901430791).

28062931897 is a wasteful number, since it uses less digits than its factorization.

28062931897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548669 (or 2548658 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 55.

It can be divided in two parts, 28062 and 931897, that added together give a palindrome (959959).

The spelling of 28062931897 in words is "twenty-eight billion, sixty-two million, nine hundred thirty-one thousand, eight hundred ninety-seven".