28773201267768 has 32 divisors (see below), whose sum is σ = 71950901644800. Its totient is φ = 9588680625888.

The previous prime is 28773201267619. The next prime is 28773201267821. The reversal of 28773201267768 is 86776210237782.

It is a super-2 number, since 2×28773201267768² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28773201267699 and 28773201267708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149055496 + ... + 149248407.

It is an arithmetic number, because the mean of its divisors is an integer number (2248465676400).

Almost surely, 2^{28773201267768} is an apocalyptic number.

It is an amenable number.

28773201267768 is an abundant number, since it is smaller than the sum of its proper divisors (43177700377032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28773201267768 is a wasteful number, since it uses less digits than its factorization.

28773201267768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298307931 (or 298307927 counting only the distinct ones).

The product of its (nonzero) digits is 132765696, while the sum is 66.

The spelling of 28773201267768 in words is "twenty-eight trillion, seven hundred seventy-three billion, two hundred one million, two hundred sixty-seven thousand, seven hundred sixty-eight".