28269920870827 has 16 divisors (see below), whose sum is σ = 29204408800000. Its totient is φ = 27336847749120.

The previous prime is 28269920870797. The next prime is 28269920870837. The reversal of 28269920870827 is 72807802996282.

It is a cyclic number.

It is not a de Polignac number, because 28269920870827 - 2²³ = 28269912482219 is a prime.

It is a super-3 number, since 3×28269920870827³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28269920870837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370719799 + ... + 370796047.

It is an arithmetic number, because the mean of its divisors is an integer number (1825275550000).

Almost surely, 2^{28269920870827} is an apocalyptic number.

28269920870827 is a deficient number, since it is larger than the sum of its proper divisors (934487929173).

28269920870827 is a wasteful number, since it uses less digits than its factorization.

28269920870827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85366.

The product of its (nonzero) digits is 195084288, while the sum is 70.

The spelling of 28269920870827 in words is "twenty-eight trillion, two hundred sixty-nine billion, nine hundred twenty million, eight hundred seventy thousand, eight hundred twenty-seven".