28462786261 has 12 divisors (see below), whose sum is σ = 35656678092. Its totient is φ = 22520006208.

The previous prime is 28462786217. The next prime is 28462786271. The reversal of 28462786261 is 16268726482.

It can be written as a sum of positive squares in 2 ways, for example, as 11346297361 + 17116488900 = 106519^2 + 130830^2 .

It is not a de Polignac number, because 28462786261 - 2⁷ = 28462786133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28462786199 and 28462786208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28462786271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22340640 + ... + 22341913.

It is an arithmetic number, because the mean of its divisors is an integer number (2971389841).

Almost surely, 2^28462786261 is an apocalyptic number.

It is an amenable number.

28462786261 is a deficient number, since it is larger than the sum of its proper divisors (7193891831).

28462786261 is a wasteful number, since it uses less digits than its factorization.

28462786261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44682580 (or 44682573 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 52.

The spelling of 28462786261 in words is "twenty-eight billion, four hundred sixty-two million, seven hundred eighty-six thousand, two hundred sixty-one".