1572728860 has 12 divisors (see below), whose sum is σ = 3302730648. Its totient is φ = 629091536.

The previous prime is 1572728849. The next prime is 1572728897. The reversal of 1572728860 is 688272751.

It is a self number, because there is not a number n which added to its sum of digits gives 1572728860.

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, 39318202 + ... + 39318241.

It is an arithmetic number, because the mean of its divisors is an integer number (275227554).

Almost surely, 2^1572728860 is an apocalyptic number.

1572728860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1572728860 is an abundant number, since it is smaller than the sum of its proper divisors (1730001788).

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

1572728860 is a wasteful number, since it uses less digits than its factorization.

1572728860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78636452 (or 78636450 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 1572728860 is about 39657.6456688997. The cubic root of 1572728860 is about 1162.9238714820.

The spelling of 1572728860 in words is "one billion, five hundred seventy-two million, seven hundred twenty-eight thousand, eight hundred sixty".