28771026774281 has 8 divisors (see below), whose sum is σ = 31418055692544. Its totient is φ = 26129244694320.

The previous prime is 28771026774229. The next prime is 28771026774289. The reversal of 28771026774281 is 18247762017782.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28771026774281 is a prime.

It is a super-2 number, since 2×28771026774281² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28771026774289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1311698105 + ... + 1311720038.

It is an arithmetic number, because the mean of its divisors is an integer number (3927256961568).

Almost surely, 2^{28771026774281} is an apocalyptic number.

It is an amenable number.

28771026774281 is a deficient number, since it is larger than the sum of its proper divisors (2647028918263).

28771026774281 is a wasteful number, since it uses less digits than its factorization.

28771026774281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623419151.

The product of its (nonzero) digits is 29503488, while the sum is 62.

The spelling of 28771026774281 in words is "twenty-eight trillion, seven hundred seventy-one billion, twenty-six million, seven hundred seventy-four thousand, two hundred eighty-one".