28689310426 has 32 divisors (see below), whose sum is σ = 49504815360. Its totient is φ = 12214720896.

The previous prime is 28689310423. The next prime is 28689310451. The reversal of 28689310426 is 62401398682.

It is a self number, because there is not a number n which added to its sum of digits gives 28689310426.

It is not an unprimeable number, because it can be changed into a prime (28689310423) 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, 6939456 + ... + 6943588.

It is an arithmetic number, because the mean of its divisors is an integer number (1547025480).

Almost surely, 2^28689310426 is an apocalyptic number.

28689310426 is a deficient number, since it is larger than the sum of its proper divisors (20815504934).

28689310426 is a wasteful number, since it uses less digits than its factorization.

28689310426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7278.

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 28689310426 in words is "twenty-eight billion, six hundred eighty-nine million, three hundred ten thousand, four hundred twenty-six".