28461845847 has 8 divisors (see below), whose sum is σ = 37957215744. Its totient is φ = 18970519928.

The previous prime is 28461845831. The next prime is 28461845897. The reversal of 28461845847 is 74854816482.

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 28461845847 - 2⁴ = 28461845831 is a prime.

It is a super-2 number, since 2×28461845847² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28461845897) 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, 994533 + ... + 1022750.

It is an arithmetic number, because the mean of its divisors is an integer number (4744651968).

Almost surely, 2^28461845847 is an apocalyptic number.

28461845847 is a deficient number, since it is larger than the sum of its proper divisors (9495369897).

28461845847 is a wasteful number, since it uses less digits than its factorization.

28461845847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021989.

The product of its digits is 13762560, while the sum is 57.

The spelling of 28461845847 in words is "twenty-eight billion, four hundred sixty-one million, eight hundred forty-five thousand, eight hundred forty-seven".