28787727965758 has 32 divisors (see below), whose sum is σ = 43387108199424. Its totient is φ = 14325521220192.

The previous prime is 28787727965699. The next prime is 28787727965761. The reversal of 28787727965758 is 85756972778782.

It is a super-4 number, since 4×28787727965758⁴ (a number of 55 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1169127435 + ... + 1169152057.

It is an arithmetic number, because the mean of its divisors is an integer number (1355847131232).

Almost surely, 2^{28787727965758} is an apocalyptic number.

28787727965758 is a deficient number, since it is larger than the sum of its proper divisors (14599380233666).

28787727965758 is a wasteful number, since it uses less digits than its factorization.

28787727965758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27816.

The product of its digits is 46467993600, while the sum is 88.

The spelling of 28787727965758 in words is "twenty-eight trillion, seven hundred eighty-seven billion, seven hundred twenty-seven million, nine hundred sixty-five thousand, seven hundred fifty-eight".