28633681247 has 16 divisors (see below), whose sum is σ = 31338565632. Its totient is φ = 26044556160.

The previous prime is 28633681231. The next prime is 28633681253. The reversal of 28633681247 is 74218633682.

It is a cyclic number.

It is not a de Polignac number, because 28633681247 - 2⁴ = 28633681231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28633681195 and 28633681204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28633081247) 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, 354998 + ... + 428124.

It is an arithmetic number, because the mean of its divisors is an integer number (1958660352).

Almost surely, 2^28633681247 is an apocalyptic number.

28633681247 is a deficient number, since it is larger than the sum of its proper divisors (2704884385).

28633681247 is a wasteful number, since it uses less digits than its factorization.

28633681247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73918.

The product of its digits is 2322432, while the sum is 50.

The spelling of 28633681247 in words is "twenty-eight billion, six hundred thirty-three million, six hundred eighty-one thousand, two hundred forty-seven".