28346221726 has 4 divisors (see below), whose sum is σ = 42519332592. Its totient is φ = 14173110862.

The previous prime is 28346221721. The next prime is 28346221759. The reversal of 28346221726 is 62712264382.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×28346221726² (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 (28346221721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7086555430 + ... + 7086555433.

It is an arithmetic number, because the mean of its divisors is an integer number (10629833148).

Almost surely, 2^28346221726 is an apocalyptic number.

28346221726 is a deficient number, since it is larger than the sum of its proper divisors (14173110866).

28346221726 is a wasteful number, since it uses less digits than its factorization.

28346221726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14173110865.

The product of its digits is 387072, while the sum is 43.

The spelling of 28346221726 in words is "twenty-eight billion, three hundred forty-six million, two hundred twenty-one thousand, seven hundred twenty-six".