2728191984572 has 24 divisors (see below), whose sum is σ = 4811081230032. Its totient is φ = 1353598646400.

The previous prime is 2728191984559. The next prime is 2728191984577. The reversal of 2728191984572 is 2754891918272.

It is a junction number, because it is equal to n+sod(n) for n = 2728191984499 and 2728191984508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728191984577) 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, 8712758 + ... + 9020450.

It is an arithmetic number, because the mean of its divisors is an integer number (200461717918).

Almost surely, 2^{2728191984572} is an apocalyptic number.

It is an amenable number.

2728191984572 is a deficient number, since it is larger than the sum of its proper divisors (2082889245460).

2728191984572 is a wasteful number, since it uses less digits than its factorization.

2728191984572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324749 (or 324747 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 65.

The spelling of 2728191984572 in words is "two trillion, seven hundred twenty-eight billion, one hundred ninety-one million, nine hundred eighty-four thousand, five hundred seventy-two".