2728172500 has 30 divisors (see below), whose sum is σ = 5965973090. Its totient is φ = 1091268000.

The previous prime is 2728172441. The next prime is 2728172507. The reversal of 2728172500 is 52718272.

2728172500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 1396068496 + 1332104004 = 37364^2 + 36498^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2728172507) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 543135 + ... + 548134.

Almost surely, 2^2728172500 is an apocalyptic number.

2728172500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2728172500 is an abundant number, since it is smaller than the sum of its proper divisors (3237800590).

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

2728172500 is a wasteful number, since it uses less digits than its factorization.

2728172500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091293 (or 1091276 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 2728172500 is about 52231.9107442950. The cubic root of 2728172500 is about 1397.3030562744.

The spelling of 2728172500 in words is "two billion, seven hundred twenty-eight million, one hundred seventy-two thousand, five hundred".