28571742860 has 48 divisors (see below), whose sum is σ = 63174988800. Its totient is φ = 10824375744.

The previous prime is 28571742839. The next prime is 28571742863. The reversal of 28571742860 is 6824717582.

It is a junction number, because it is equal to n+sod(n) for n = 28571742799 and 28571742808.

It is not an unprimeable number, because it can be changed into a prime (28571742863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1998899 + ... + 2013141.

It is an arithmetic number, because the mean of its divisors is an integer number (1316145600).

Almost surely, 2^28571742860 is an apocalyptic number.

28571742860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28571742860 is an abundant number, since it is smaller than the sum of its proper divisors (34603245940).

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

28571742860 is a wasteful number, since it uses less digits than its factorization.

28571742860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19550 (or 19548 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 50.

The spelling of 28571742860 in words is "twenty-eight billion, five hundred seventy-one million, seven hundred forty-two thousand, eight hundred sixty".