28013259823 has 8 divisors (see below), whose sum is σ = 28239411200. Its totient is φ = 27787195800.

The previous prime is 28013259817. The next prime is 28013259829. The reversal of 28013259823 is 32895231082.

It is an interprime number because it is at equal distance from previous prime (28013259817) and next prime (28013259829).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28013259823 - 2¹³ = 28013251631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28013259823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28013259829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 724228 + ... + 761926.

It is an arithmetic number, because the mean of its divisors is an integer number (3529926400).

Almost surely, 2^28013259823 is an apocalyptic number.

28013259823 is a deficient number, since it is larger than the sum of its proper divisors (226151377).

28013259823 is a wasteful number, since it uses less digits than its factorization.

28013259823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43677.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 28013259823 in words is "twenty-eight billion, thirteen million, two hundred fifty-nine thousand, eight hundred twenty-three".