28882539856 has 20 divisors (see below), whose sum is σ = 56748091104. Its totient is φ = 14237871200.

The previous prime is 28882539817. The next prime is 28882539857. The reversal of 28882539856 is 65893528882.

It is a happy number.

It is a super-2 number, since 2×28882539856² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28882539857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12711250 + ... + 12713521.

Almost surely, 2^28882539856 is an apocalyptic number.

It is an amenable number.

28882539856 is a deficient number, since it is larger than the sum of its proper divisors (27865551248).

28882539856 is a wasteful number, since it uses less digits than its factorization.

28882539856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25424850 (or 25424844 counting only the distinct ones).

The product of its digits is 66355200, while the sum is 64.

The spelling of 28882539856 in words is "twenty-eight billion, eight hundred eighty-two million, five hundred thirty-nine thousand, eight hundred fifty-six".