28698712834 has 16 divisors (see below), whose sum is σ = 47555982720. Its totient is φ = 12879743760.

The previous prime is 28698712807. The next prime is 28698712841. The reversal of 28698712834 is 43821789682.

It is a happy number.

It is a super-2 number, since 2×28698712834² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8254509 + ... + 8257984.

It is an arithmetic number, because the mean of its divisors is an integer number (2972248920).

Almost surely, 2^28698712834 is an apocalyptic number.

28698712834 is a deficient number, since it is larger than the sum of its proper divisors (18857269886).

28698712834 is a wasteful number, since it uses less digits than its factorization.

28698712834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16512585.

The product of its digits is 9289728, while the sum is 58.

The spelling of 28698712834 in words is "twenty-eight billion, six hundred ninety-eight million, seven hundred twelve thousand, eight hundred thirty-four".