28015632677 has 16 divisors (see below), whose sum is σ = 30394003200. Its totient is φ = 25738015680.

The previous prime is 28015632649. The next prime is 28015632683. The reversal of 28015632677 is 77623651082.

It is a cyclic number.

It is not a de Polignac number, because 28015632677 - 2¹² = 28015628581 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28015632607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46574 + ... + 241247.

It is an arithmetic number, because the mean of its divisors is an integer number (1899625200).

Almost surely, 2^28015632677 is an apocalyptic number.

It is an amenable number.

28015632677 is a deficient number, since it is larger than the sum of its proper divisors (2378370523).

28015632677 is a wasteful number, since it uses less digits than its factorization.

28015632677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287996.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 28015632677 in words is "twenty-eight billion, fifteen million, six hundred thirty-two thousand, six hundred seventy-seven".