28716765562 has 8 divisors (see below), whose sum is σ = 43079939892. Its totient is φ = 14356785600.

The previous prime is 28716765559. The next prime is 28716765647. The reversal of 28716765562 is 26556761782.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18365941441 + 10350824121 = 135521^2 + 101739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775989 + ... + 812152.

Almost surely, 2^28716765562 is an apocalyptic number.

28716765562 is a deficient number, since it is larger than the sum of its proper divisors (14363174330).

28716765562 is a wasteful number, since it uses less digits than its factorization.

28716765562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597184.

The product of its digits is 8467200, while the sum is 55.

The spelling of 28716765562 in words is "twenty-eight billion, seven hundred sixteen million, seven hundred sixty-five thousand, five hundred sixty-two".