28673623686 has 16 divisors (see below), whose sum is σ = 57376968768. Its totient is φ = 9552921000.

The previous prime is 28673623681. The next prime is 28673623697. The reversal of 28673623686 is 68632637682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28673623681) 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, 1225840 + ... + 1249011.

It is an arithmetic number, because the mean of its divisors is an integer number (3586060548).

Almost surely, 2^28673623686 is an apocalyptic number.

28673623686 is an abundant number, since it is smaller than the sum of its proper divisors (28703345082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28673623686 is a wasteful number, since it uses less digits than its factorization.

28673623686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476787.

The product of its digits is 20901888, while the sum is 57.

The spelling of 28673623686 in words is "twenty-eight billion, six hundred seventy-three million, six hundred twenty-three thousand, six hundred eighty-six".