28001058646 has 8 divisors (see below), whose sum is σ = 45819914184. Its totient is φ = 12727753920.

The previous prime is 28001058641. The next prime is 28001058661. The reversal of 28001058646 is 64685010082.

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

It is a junction number, because it is equal to n+sod(n) for n = 28001058599 and 28001058608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28001058641) 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, 636387675 + ... + 636387718.

It is an arithmetic number, because the mean of its divisors is an integer number (5727489273).

Almost surely, 2^28001058646 is an apocalyptic number.

28001058646 is a deficient number, since it is larger than the sum of its proper divisors (17818855538).

28001058646 is a wasteful number, since it uses less digits than its factorization.

28001058646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272775406.

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 28001058646 in words is "twenty-eight billion, one million, fifty-eight thousand, six hundred forty-six".