28081346323 has 32 divisors (see below), whose sum is σ = 30735106560. Its totient is φ = 25575137280.

The previous prime is 28081346309. The next prime is 28081346327. The reversal of 28081346323 is 32364318082.

It is a cyclic number.

It is not a de Polignac number, because 28081346323 - 2²⁹ = 27544475411 is a prime.

It is a super-2 number, since 2×28081346323² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28081346327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18341068 + ... + 18342598.

It is an arithmetic number, because the mean of its divisors is an integer number (960472080).

Almost surely, 2^28081346323 is an apocalyptic number.

28081346323 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28081346323 is a deficient number, since it is larger than the sum of its proper divisors (2653760237).

28081346323 is a wasteful number, since it uses less digits than its factorization.

28081346323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 28081346323 in words is "twenty-eight billion, eighty-one million, three hundred forty-six thousand, three hundred twenty-three".