28376929887 has 8 divisors (see below), whose sum is σ = 38858498736. Its totient is φ = 18406657152.

The previous prime is 28376929883. The next prime is 28376929897. The reversal of 28376929887 is 78892967382.

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

It is not a de Polignac number, because 28376929887 - 2² = 28376929883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28376929883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127823898 + ... + 127824119.

It is an arithmetic number, because the mean of its divisors is an integer number (4857312342).

Almost surely, 2^28376929887 is an apocalyptic number.

28376929887 is a deficient number, since it is larger than the sum of its proper divisors (10481568849).

28376929887 is a wasteful number, since it uses less digits than its factorization.

28376929887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255648057.

The product of its digits is 146313216, while the sum is 69.

The spelling of 28376929887 in words is "twenty-eight billion, three hundred seventy-six million, nine hundred twenty-nine thousand, eight hundred eighty-seven".