28114572500 has 60 divisors (see below), whose sum is σ = 70263983328. Its totient is φ = 9639276000.

The previous prime is 28114572461. The next prime is 28114572527. The reversal of 28114572500 is 527541182.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 785774 + ... + 820773.

Almost surely, 2^28114572500 is an apocalyptic number.

28114572500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28114572500 is an abundant number, since it is smaller than the sum of its proper divisors (42149410828).

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

28114572500 is a wasteful number, since it uses less digits than its factorization.

28114572500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606578 (or 1606561 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 35.

The spelling of 28114572500 in words is "twenty-eight billion, one hundred fourteen million, five hundred seventy-two thousand, five hundred".