3145884728 has 16 divisors (see below), whose sum is σ = 6741181680. Its totient is φ = 1348236288.

The previous prime is 3145884719. The next prime is 3145884751. The reversal of 3145884728 is 8274885413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28088201 + ... + 28088312.

It is an arithmetic number, because the mean of its divisors is an integer number (421323855).

Almost surely, 2^3145884728 is an apocalyptic number.

It is an amenable number.

3145884728 is an abundant number, since it is smaller than the sum of its proper divisors (3595296952).

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

3145884728 is a wasteful number, since it uses less digits than its factorization.

3145884728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56176526 (or 56176522 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 50.

The square root of 3145884728 is about 56088.1870628745. The cubic root of 3145884728 is about 1465.2585639365.

The spelling of 3145884728 in words is "three billion, one hundred forty-five million, eight hundred eighty-four thousand, seven hundred twenty-eight".