28062721743 has 48 divisors (see below), whose sum is σ = 44756456544. Its totient is φ = 15583518720.

The previous prime is 28062721741. The next prime is 28062721787. The reversal of 28062721743 is 34712726082.

It is a happy number.

It is not a de Polignac number, because 28062721743 - 2¹ = 28062721741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28062721695 and 28062721704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28062721741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5311263 + ... + 5316543.

It is an arithmetic number, because the mean of its divisors is an integer number (932426178).

Almost surely, 2^28062721743 is an apocalyptic number.

28062721743 is a deficient number, since it is larger than the sum of its proper divisors (16693734801).

28062721743 is a wasteful number, since it uses less digits than its factorization.

28062721743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6312 (or 6305 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The spelling of 28062721743 in words is "twenty-eight billion, sixty-two million, seven hundred twenty-one thousand, seven hundred forty-three".