28354146047 has 4 divisors (see below), whose sum is σ = 28354504920. Its totient is φ = 28353787176.

The previous prime is 28354145977. The next prime is 28354146059. The reversal of 28354146047 is 74064145382.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28354146047 - 2¹⁰ = 28354145023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28354145989 and 28354146007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28354146547) 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, 3272 + ... + 238157.

It is an arithmetic number, because the mean of its divisors is an integer number (7088626230).

Almost surely, 2^28354146047 is an apocalyptic number.

28354146047 is a deficient number, since it is larger than the sum of its proper divisors (358873).

28354146047 is a wasteful number, since it uses less digits than its factorization.

28354146047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358872.

The product of its (nonzero) digits is 645120, while the sum is 44.

The spelling of 28354146047 in words is "twenty-eight billion, three hundred fifty-four million, one hundred forty-six thousand, forty-seven".