28437688834 has 16 divisors (see below), whose sum is σ = 43604324640. Its totient is φ = 13905411840.

The previous prime is 28437688817. The next prime is 28437688849. The reversal of 28437688834 is 43888673482.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601572 + ... + 647119.

It is an arithmetic number, because the mean of its divisors is an integer number (2725270290).

Almost surely, 2^28437688834 is an apocalyptic number.

28437688834 is a deficient number, since it is larger than the sum of its proper divisors (15166635806).

28437688834 is a wasteful number, since it uses less digits than its factorization.

28437688834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248945.

The product of its digits is 49545216, while the sum is 61.

The spelling of 28437688834 in words is "twenty-eight billion, four hundred thirty-seven million, six hundred eighty-eight thousand, eight hundred thirty-four".