28521728726 has 8 divisors (see below), whose sum is σ = 44642705904. Its totient is φ = 13640826760.

The previous prime is 28521728713. The next prime is 28521728743. The reversal of 28521728726 is 62782712582.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310018745 + ... + 310018836.

It is an arithmetic number, because the mean of its divisors is an integer number (5580338238).

Almost surely, 2^28521728726 is an apocalyptic number.

28521728726 is a deficient number, since it is larger than the sum of its proper divisors (16120977178).

28521728726 is a wasteful number, since it uses less digits than its factorization.

28521728726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620037606.

The product of its digits is 1505280, while the sum is 50.

The spelling of 28521728726 in words is "twenty-eight billion, five hundred twenty-one million, seven hundred twenty-eight thousand, seven hundred twenty-six".