728021877107 has 4 divisors (see below), whose sum is σ = 832025002416. Its totient is φ = 624018751800.

The previous prime is 728021877101. The next prime is 728021877181. The reversal of 728021877107 is 701778120827.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 728021877107 - 2¹⁸ = 728021614963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728021877101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52001562644 + ... + 52001562657.

It is an arithmetic number, because the mean of its divisors is an integer number (208006250604).

Almost surely, 2^728021877107 is an apocalyptic number.

728021877107 is a deficient number, since it is larger than the sum of its proper divisors (104003125309).

728021877107 is a wasteful number, since it uses less digits than its factorization.

728021877107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104003125308.

The product of its (nonzero) digits is 614656, while the sum is 50.

The spelling of 728021877107 in words is "seven hundred twenty-eight billion, twenty-one million, eight hundred seventy-seven thousand, one hundred seven".