28571745960 has 96 divisors (see below), whose sum is σ = 92883871080. Its totient is φ = 7617024000.

The previous prime is 28571745959. The next prime is 28571745971. The reversal of 28571745960 is 6954717582.

28571745960 is a `hidden beast` number, since 2 + 8 + 571 + 7 + 4 + 5 + 9 + 60 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 21925909476 + 6645836484 = 148074^2 + 81522^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28571745897 and 28571745906.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1633260 + ... + 1650660.

Almost surely, 2^28571745960 is an apocalyptic number.

28571745960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28571745960 is an abundant number, since it is smaller than the sum of its proper divisors (64312125120).

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

28571745960 is a wasteful number, since it uses less digits than its factorization.

28571745960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21979 (or 21972 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 28571745960 in words is "twenty-eight billion, five hundred seventy-one million, seven hundred forty-five thousand, nine hundred sixty".