28149474863 has 8 divisors (see below), whose sum is σ = 29206566480. Its totient is φ = 27098144640.

The previous prime is 28149474839. The next prime is 28149474889. The reversal of 28149474863 is 36847494182.

It is a happy number.

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 28149474863 - 2²⁴ = 28132697647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28149474799 and 28149474808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28149414863) 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, 1430393 + ... + 1449938.

It is an arithmetic number, because the mean of its divisors is an integer number (3650820810).

Almost surely, 2^28149474863 is an apocalyptic number.

28149474863 is a deficient number, since it is larger than the sum of its proper divisors (1057091617).

28149474863 is a wasteful number, since it uses less digits than its factorization.

28149474863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880697.

The product of its digits is 9289728, while the sum is 56.

The spelling of 28149474863 in words is "twenty-eight billion, one hundred forty-nine million, four hundred seventy-four thousand, eight hundred sixty-three".