28730947368 has 32 divisors (see below), whose sum is σ = 71877369600. Its totient is φ = 9570315648.

The previous prime is 28730947363. The next prime is 28730947369. The reversal of 28730947368 is 86374903782.

It is a super-2 number, since 2×28730947368² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28730947363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381421 + ... + 450492.

It is an arithmetic number, because the mean of its divisors is an integer number (2246167800).

Almost surely, 2^28730947368 is an apocalyptic number.

It is an amenable number.

28730947368 is an abundant number, since it is smaller than the sum of its proper divisors (43146422232).

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

28730947368 is a wasteful number, since it uses less digits than its factorization.

28730947368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833361 (or 833357 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 57.

The spelling of 28730947368 in words is "twenty-eight billion, seven hundred thirty million, nine hundred forty-seven thousand, three hundred sixty-eight".