28724013378830 has 48 divisors (see below), whose sum is σ = 65612254691376. Its totient is φ = 8952939233280.

The previous prime is 28724013378829. The next prime is 28724013378859. The reversal of 28724013378830 is 3887331042782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2664559859 + ... + 2664570638.

It is an arithmetic number, because the mean of its divisors is an integer number (1366921972737).

Almost surely, 2^{28724013378830} is an apocalyptic number.

28724013378830 is an abundant number, since it is smaller than the sum of its proper divisors (36888241312546).

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

28724013378830 is a wasteful number, since it uses less digits than its factorization.

28724013378830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5329130529 (or 5329130522 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 56.

The spelling of 28724013378830 in words is "twenty-eight trillion, seven hundred twenty-four billion, thirteen million, three hundred seventy-eight thousand, eight hundred thirty".