28360404403 has 4 divisors (see below), whose sum is σ = 29593465488. Its totient is φ = 27127343320.

The previous prime is 28360404389. The next prime is 28360404431. The reversal of 28360404403 is 30440406382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28360404403 - 2³³ = 19770469811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28360464403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 616530508 + ... + 616530553.

It is an arithmetic number, because the mean of its divisors is an integer number (7398366372).

Almost surely, 2^28360404403 is an apocalyptic number.

28360404403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28360404403 is a deficient number, since it is larger than the sum of its proper divisors (1233061085).

28360404403 is a wasteful number, since it uses less digits than its factorization.

28360404403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233061084.

The product of its (nonzero) digits is 55296, while the sum is 34.

The spelling of 28360404403 in words is "twenty-eight billion, three hundred sixty million, four hundred four thousand, four hundred three".