28410113381 has 12 divisors (see below), whose sum is σ = 31059035532. Its totient is φ = 25833253248.

The previous prime is 28410113377. The next prime is 28410113387. The reversal of 28410113381 is 18331101482.

It can be written as a sum of positive squares in 2 ways, for example, as 18444084481 + 9966028900 = 135809^2 + 99830^2 .

It is not a de Polignac number, because 28410113381 - 2² = 28410113377 is a prime.

It is a super-2 number, since 2×28410113381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28410113387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185060 + ... + 301773.

It is an arithmetic number, because the mean of its divisors is an integer number (2588252961).

Almost surely, 2^28410113381 is an apocalyptic number.

It is an amenable number.

28410113381 is a deficient number, since it is larger than the sum of its proper divisors (2648922151).

28410113381 is an equidigital number, since it uses as much as digits as its factorization.

28410113381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486980 (or 486913 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The spelling of 28410113381 in words is "twenty-eight billion, four hundred ten million, one hundred thirteen thousand, three hundred eighty-one".