28634891486 has 32 divisors (see below), whose sum is σ = 44997120000. Its totient is φ = 13640901120.

The previous prime is 28634891459. The next prime is 28634891489. The reversal of 28634891486 is 68419843682.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28634891489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20467415 + ... + 20468813.

It is an arithmetic number, because the mean of its divisors is an integer number (1406160000).

Almost surely, 2^28634891486 is an apocalyptic number.

28634891486 is a deficient number, since it is larger than the sum of its proper divisors (16362228514).

28634891486 is a wasteful number, since it uses less digits than its factorization.

28634891486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864.

The product of its digits is 15925248, while the sum is 59.

The spelling of 28634891486 in words is "twenty-eight billion, six hundred thirty-four million, eight hundred ninety-one thousand, four hundred eighty-six".