28600320872 has 24 divisors (see below), whose sum is σ = 56965609110. Its totient is φ = 13458973440.

The previous prime is 28600320839. The next prime is 28600320901. The reversal of 28600320872 is 27802300682.

It can be written as a sum of positive squares in 3 ways, for example, as 27911048356 + 689272516 = 167066^2 + 26254^2 .

It is a super-3 number, since 3×28600320872³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6182879 + ... + 6187502.

Almost surely, 2^28600320872 is an apocalyptic number.

It is an amenable number.

28600320872 is a deficient number, since it is larger than the sum of its proper divisors (28365288238).

28600320872 is a wasteful number, since it uses less digits than its factorization.

28600320872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12370421 (or 12370400 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 28600320872 in words is "twenty-eight billion, six hundred million, three hundred twenty thousand, eight hundred seventy-two".