28642796743 has 8 divisors (see below), whose sum is σ = 31713056640. Its totient is φ = 25650265080.

The previous prime is 28642796737. The next prime is 28642796789. The reversal of 28642796743 is 34769724682.

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

It is a de Polignac number, because none of the positive numbers 2^k-28642796743 is a prime.

It is a super-2 number, since 2×28642796743² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28642196743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19431283 + ... + 19432756.

It is an arithmetic number, because the mean of its divisors is an integer number (3964132080).

Almost surely, 2^28642796743 is an apocalyptic number.

28642796743 is a deficient number, since it is larger than the sum of its proper divisors (3070259897).

28642796743 is a wasteful number, since it uses less digits than its factorization.

28642796743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38864117.

The product of its digits is 24385536, while the sum is 58.

The spelling of 28642796743 in words is "twenty-eight billion, six hundred forty-two million, seven hundred ninety-six thousand, seven hundred forty-three".