28861556038 has 8 divisors (see below), whose sum is σ = 49476953232. Its totient is φ = 12369238296.

The previous prime is 28861556027. The next prime is 28861556039. The reversal of 28861556038 is 83065516882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28861556038² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28861556039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1030769845 + ... + 1030769872.

It is an arithmetic number, because the mean of its divisors is an integer number (6184619154).

Almost surely, 2^28861556038 is an apocalyptic number.

28861556038 is a deficient number, since it is larger than the sum of its proper divisors (20615397194).

28861556038 is a wasteful number, since it uses less digits than its factorization.

28861556038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061539726.

The product of its (nonzero) digits is 2764800, while the sum is 52.

The spelling of 28861556038 in words is "twenty-eight billion, eight hundred sixty-one million, five hundred fifty-six thousand, thirty-eight".