2174025728 has 102 divisors (see below), whose sum is σ = 5065369866. Its totient is φ = 930349056.

The previous prime is 2174025713. The next prime is 2174025731. The reversal of 2174025728 is 8275204712.

It can be written as a sum of positive squares in only one way, i.e., 2170814464 + 3211264 = 46592^2 + 1792^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2174025691 and 2174025700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3210926 + ... + 3211602.

Almost surely, 2^2174025728 is an apocalyptic number.

2174025728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2174025728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2532684933).

2174025728 is an abundant number, since it is smaller than the sum of its proper divisors (2891344138).

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

2174025728 is an frugal number, since it uses more digits than its factorization.

2174025728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 2174025728 is about 46626.4488032276. The cubic root of 2174025728 is about 1295.4526978297.

The spelling of 2174025728 in words is "two billion, one hundred seventy-four million, twenty-five thousand, seven hundred twenty-eight".