28313443883452 has 72 divisors (see below), whose sum is σ = 61407656827776. Its totient is φ = 11184521984064.

The previous prime is 28313443883441. The next prime is 28313443883471. The reversal of 28313443883452 is 25438834431382.

It is a happy number.

It is a super-2 number, since 2×28313443883452² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1148278 + ... + 7612189.

It is an arithmetic number, because the mean of its divisors is an integer number (852884122608).

Almost surely, 2^{28313443883452} is an apocalyptic number.

It is an amenable number.

28313443883452 is an abundant number, since it is smaller than the sum of its proper divisors (33094212944324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28313443883452 is a wasteful number, since it uses less digits than its factorization.

28313443883452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8761187 (or 8761172 counting only the distinct ones).

The product of its digits is 53084160, while the sum is 58.

The spelling of 28313443883452 in words is "twenty-eight trillion, three hundred thirteen billion, four hundred forty-three million, eight hundred eighty-three thousand, four hundred fifty-two".