28040692726 has 4 divisors (see below), whose sum is σ = 42061039092. Its totient is φ = 14020346362.

The previous prime is 28040692723. The next prime is 28040692733. The reversal of 28040692726 is 62729604082.

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

It is a super-2 number, since 2×28040692726² (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 (28040692723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7010173180 + ... + 7010173183.

It is an arithmetic number, because the mean of its divisors is an integer number (10515259773).

Almost surely, 2^28040692726 is an apocalyptic number.

28040692726 is a deficient number, since it is larger than the sum of its proper divisors (14020346366).

28040692726 is a wasteful number, since it uses less digits than its factorization.

28040692726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14020346365.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 28040692726 in words is "twenty-eight billion, forty million, six hundred ninety-two thousand, seven hundred twenty-six".