28547664742 has 16 divisors (see below), whose sum is σ = 43325053200. Its totient is φ = 14106146560.

The previous prime is 28547664731. The next prime is 28547664793. The reversal of 28547664742 is 24746674582.

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, 311742 + ... + 392782.

It is an arithmetic number, because the mean of its divisors is an integer number (2707815825).

Almost surely, 2^28547664742 is an apocalyptic number.

28547664742 is a deficient number, since it is larger than the sum of its proper divisors (14777388458).

28547664742 is a wasteful number, since it uses less digits than its factorization.

28547664742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83111.

The product of its digits is 18063360, while the sum is 55.

The spelling of 28547664742 in words is "twenty-eight billion, five hundred forty-seven million, six hundred sixty-four thousand, seven hundred forty-two".