28867678699 has 8 divisors (see below), whose sum is σ = 31142491200. Its totient is φ = 26656945536.

The previous prime is 28867678687. The next prime is 28867678711. The reversal of 28867678699 is 99687676882.

It is an interprime number because it is at equal distance from previous prime (28867678687) and next prime (28867678711).

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

It is a cyclic number.

It is not a de Polignac number, because 28867678699 - 2⁵ = 28867678667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28867678199) 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, 16018899 + ... + 16020700.

It is an arithmetic number, because the mean of its divisors is an integer number (3892811400).

Almost surely, 2^28867678699 is an apocalyptic number.

28867678699 is a deficient number, since it is larger than the sum of its proper divisors (2274812501).

28867678699 is a wasteful number, since it uses less digits than its factorization.

28867678699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32039669.

The product of its digits is 877879296, while the sum is 76.

The spelling of 28867678699 in words is "twenty-eight billion, eight hundred sixty-seven million, six hundred seventy-eight thousand, six hundred ninety-nine".