28671636367 has 16 divisors (see below), whose sum is σ = 33814224000. Its totient is φ = 24025883040.

The previous prime is 28671636359. The next prime is 28671636373. The reversal of 28671636367 is 76363617682.

It is a happy number.

It is not a de Polignac number, because 28671636367 - 2³ = 28671636359 is a prime.

It is a super-2 number, since 2×28671636367² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28671636337) 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, 1846117 + ... + 1861582.

It is an arithmetic number, because the mean of its divisors is an integer number (2113389000).

Almost surely, 2^28671636367 is an apocalyptic number.

28671636367 is a deficient number, since it is larger than the sum of its proper divisors (5142587633).

28671636367 is a wasteful number, since it uses less digits than its factorization.

28671636367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707766.

The product of its digits is 9144576, while the sum is 55.

The spelling of 28671636367 in words is "twenty-eight billion, six hundred seventy-one million, six hundred thirty-six thousand, three hundred sixty-seven".