28657223486 has 16 divisors (see below), whose sum is σ = 44022888288. Its totient is φ = 13986924000.

The previous prime is 28657223479. The next prime is 28657223597. The reversal of 28657223486 is 68432275682.

It is a congruent number.

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, 984725 + ... + 1013408.

It is an arithmetic number, because the mean of its divisors is an integer number (2751430518).

Almost surely, 2^28657223486 is an apocalyptic number.

28657223486 is a deficient number, since it is larger than the sum of its proper divisors (15365664802).

28657223486 is a wasteful number, since it uses less digits than its factorization.

28657223486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1998307.

The product of its digits is 7741440, while the sum is 53.

The spelling of 28657223486 in words is "twenty-eight billion, six hundred fifty-seven million, two hundred twenty-three thousand, four hundred eighty-six".