28813387734 has 24 divisors (see below), whose sum is σ = 62477943840. Its totient is φ = 9596933808.

The previous prime is 28813387717. The next prime is 28813387777. The reversal of 28813387734 is 43778331882.

It is a happy number.

It is a super-2 number, since 2×28813387734² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 603774 + ... + 649745.

It is an arithmetic number, because the mean of its divisors is an integer number (2603247660).

Almost surely, 2^28813387734 is an apocalyptic number.

28813387734 is an abundant number, since it is smaller than the sum of its proper divisors (33664556106).

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

28813387734 is a wasteful number, since it uses less digits than its factorization.

28813387734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254804 (or 1254801 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 54.

The spelling of 28813387734 in words is "twenty-eight billion, eight hundred thirteen million, three hundred eighty-seven thousand, seven hundred thirty-four".