28571742808 has 24 divisors (see below), whose sum is σ = 62318470500. Its totient is φ = 12245032464.

The previous prime is 28571742791. The next prime is 28571742809. The reversal of 28571742808 is 80824717582.

It is a super-3 number, since 3×28571742808³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28571742809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36443158 + ... + 36443941.

Almost surely, 2^28571742808 is an apocalyptic number.

28571742808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28571742808 is an abundant number, since it is smaller than the sum of its proper divisors (33746727692).

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

28571742808 is a wasteful number, since it uses less digits than its factorization.

28571742808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72887119 (or 72887108 counting only the distinct ones).

The product of its (nonzero) digits is 2007040, while the sum is 52.

The spelling of 28571742808 in words is "twenty-eight billion, five hundred seventy-one million, seven hundred forty-two thousand, eight hundred eight".