28926101887 has 4 divisors (see below), whose sum is σ = 28988042616. Its totient is φ = 28864161160.

The previous prime is 28926101861. The next prime is 28926101917. The reversal of 28926101887 is 78810162982.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28926101887 - 2¹⁵ = 28926069119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28926101807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30969664 + ... + 30970597.

It is an arithmetic number, because the mean of its divisors is an integer number (7247010654).

Almost surely, 2^28926101887 is an apocalyptic number.

28926101887 is a deficient number, since it is larger than the sum of its proper divisors (61940729).

28926101887 is an equidigital number, since it uses as much as digits as its factorization.

28926101887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61940728.

The product of its (nonzero) digits is 774144, while the sum is 52.

The spelling of 28926101887 in words is "twenty-eight billion, nine hundred twenty-six million, one hundred one thousand, eight hundred eighty-seven".