28670052500 has 60 divisors (see below), whose sum is σ = 64857754500. Its totient is φ = 11072544000.

The previous prime is 28670052473. The next prime is 28670052539. The reversal of 28670052500 is 525007682.

It can be written as a sum of positive squares in 10 ways, for example, as 21843657616 + 6826394884 = 147796^2 + 82622^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 125225 + ... + 270224.

It is an arithmetic number, because the mean of its divisors is an integer number (1080962575).

Almost surely, 2^28670052500 is an apocalyptic number.

28670052500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28670052500 is an abundant number, since it is smaller than the sum of its proper divisors (36187702000).

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

28670052500 is a wasteful number, since it uses less digits than its factorization.

28670052500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395502 (or 395485 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 28670052500 in words is "twenty-eight billion, six hundred seventy million, fifty-two thousand, five hundred".