28801692887 has 8 divisors (see below), whose sum is σ = 33073714560. Its totient is φ = 24805285560.

The previous prime is 28801692869. The next prime is 28801692923. The reversal of 28801692887 is 78829610882.

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

It is not a de Polignac number, because 28801692887 - 2¹² = 28801688791 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 (28801692187) 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, 68903363 + ... + 68903780.

It is an arithmetic number, because the mean of its divisors is an integer number (4134214320).

Almost surely, 2^28801692887 is an apocalyptic number.

28801692887 is a deficient number, since it is larger than the sum of its proper divisors (4272021673).

28801692887 is a wasteful number, since it uses less digits than its factorization.

28801692887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137807173.

The product of its (nonzero) digits is 6193152, while the sum is 59.

The spelling of 28801692887 in words is "twenty-eight billion, eight hundred one million, six hundred ninety-two thousand, eight hundred eighty-seven".