28874102293807 has 4 divisors (see below), whose sum is σ = 28874128907520. Its totient is φ = 28874075680096.

The previous prime is 28874102293739. The next prime is 28874102293873. The reversal of 28874102293807 is 70839220147882.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28874102293807 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 (28874102293607) 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, 11607082 + ... + 13873447.

It is an arithmetic number, because the mean of its divisors is an integer number (7218532226880).

Almost surely, 2^{28874102293807} is an apocalyptic number.

28874102293807 is a deficient number, since it is larger than the sum of its proper divisors (26613713).

28874102293807 is a wasteful number, since it uses less digits than its factorization.

28874102293807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26613712.

The product of its (nonzero) digits is 21676032, while the sum is 61.

The spelling of 28874102293807 in words is "twenty-eight trillion, eight hundred seventy-four billion, one hundred two million, two hundred ninety-three thousand, eight hundred seven".