28710544468 has 6 divisors (see below), whose sum is σ = 50243452826. Its totient is φ = 14355272232.

The previous prime is 28710544459. The next prime is 28710544477. The reversal of 28710544468 is 86444501782.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28710544459) and next prime (28710544477).

It can be written as a sum of positive squares in only one way, i.e., 25421751364 + 3288793104 = 159442^2 + 57348^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3588818055 + ... + 3588818062.

Almost surely, 2^28710544468 is an apocalyptic number.

It is an amenable number.

28710544468 is a deficient number, since it is larger than the sum of its proper divisors (21532908358).

28710544468 is a wasteful number, since it uses less digits than its factorization.

28710544468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7177636121 (or 7177636119 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 49.

The spelling of 28710544468 in words is "twenty-eight billion, seven hundred ten million, five hundred forty-four thousand, four hundred sixty-eight".