28338734877 has 8 divisors (see below), whose sum is σ = 38263271040. Its totient is φ = 18653344320.

The previous prime is 28338734873. The next prime is 28338734887. The reversal of 28338734877 is 77843783382.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28338734877 - 2² = 28338734873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28338734877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28338734873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59786124 + ... + 59786597.

It is an arithmetic number, because the mean of its divisors is an integer number (4782908880).

Almost surely, 2^28338734877 is an apocalyptic number.

It is an amenable number.

28338734877 is a deficient number, since it is larger than the sum of its proper divisors (9924536163).

28338734877 is a wasteful number, since it uses less digits than its factorization.

28338734877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119572803.

The product of its digits is 37933056, while the sum is 60.

The spelling of 28338734877 in words is "twenty-eight billion, three hundred thirty-eight million, seven hundred thirty-four thousand, eight hundred seventy-seven".