28734771458860 has 24 divisors (see below), whose sum is σ = 60359245823520. Its totient is φ = 11490817962624.

The previous prime is 28734771458791. The next prime is 28734771458879. The reversal of 28734771458860 is 6885417743782.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28734771458860.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193087569 + ... + 193236328.

It is an arithmetic number, because the mean of its divisors is an integer number (2514968575980).

Almost surely, 2^{28734771458860} is an apocalyptic number.

28734771458860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28734771458860 is an abundant number, since it is smaller than the sum of its proper divisors (31624474364660).

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

28734771458860 is a wasteful number, since it uses less digits than its factorization.

28734771458860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386327625 (or 386327623 counting only the distinct ones).

The product of its (nonzero) digits is 505774080, while the sum is 70.

The spelling of 28734771458860 in words is "twenty-eight trillion, seven hundred thirty-four billion, seven hundred seventy-one million, four hundred fifty-eight thousand, eight hundred sixty".