28080223405 has 32 divisors (see below), whose sum is σ = 38249164800. Its totient is φ = 19618578432.

The previous prime is 28080223403. The next prime is 28080223439. The reversal of 28080223405 is 50432208082.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28080223405 - 2¹ = 28080223403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28080223403) 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, 934932 + ... + 964498.

It is an arithmetic number, because the mean of its divisors is an integer number (1195286400).

Almost surely, 2^28080223405 is an apocalyptic number.

It is an amenable number.

28080223405 is a deficient number, since it is larger than the sum of its proper divisors (10168941395).

28080223405 is a wasteful number, since it uses less digits than its factorization.

28080223405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30373.

The product of its (nonzero) digits is 30720, while the sum is 34.

The spelling of 28080223405 in words is "twenty-eight billion, eighty million, two hundred twenty-three thousand, four hundred five".