28442710774731 has 24 divisors (see below), whose sum is σ = 41727040024320. Its totient is φ = 17220470193520.

The previous prime is 28442710774717. The next prime is 28442710774741. The reversal of 28442710774731 is 13747701724482.

It is not a de Polignac number, because 28442710774731 - 2¹⁰ = 28442710773707 is a prime.

It is a super-2 number, since 2×28442710774731² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28442710774741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39497991 + ... + 40211648.

It is an arithmetic number, because the mean of its divisors is an integer number (1738626667680).

Almost surely, 2^{28442710774731} is an apocalyptic number.

28442710774731 is a deficient number, since it is larger than the sum of its proper divisors (13284329249589).

28442710774731 is a wasteful number, since it uses less digits than its factorization.

28442710774731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79710647 (or 79710636 counting only the distinct ones).

The product of its (nonzero) digits is 14751744, while the sum is 57.

The spelling of 28442710774731 in words is "twenty-eight trillion, four hundred forty-two billion, seven hundred ten million, seven hundred seventy-four thousand, seven hundred thirty-one".