28008500631 has 8 divisors (see below), whose sum is σ = 38968348800. Its totient is φ = 17860493112.

The previous prime is 28008500629. The next prime is 28008500659. The reversal of 28008500631 is 13600580082.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28008500631 - 2¹ = 28008500629 is a prime.

It is a super-2 number, since 2×28008500631² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28008500592 and 28008500601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28008500621) 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, 202960081 + ... + 202960218.

It is an arithmetic number, because the mean of its divisors is an integer number (4871043600).

Almost surely, 2^28008500631 is an apocalyptic number.

28008500631 is a deficient number, since it is larger than the sum of its proper divisors (10959848169).

28008500631 is a wasteful number, since it uses less digits than its factorization.

28008500631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405920325.

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 28008500631 in words is "twenty-eight billion, eight million, five hundred thousand, six hundred thirty-one".