28317717442 has 16 divisors (see below), whose sum is σ = 48915231552. Its totient is φ = 12043521360.

The previous prime is 28317717427. The next prime is 28317717443. The reversal of 28317717442 is 24471771382.

It is a happy number.

It is a super-2 number, since 2×28317717442² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28317717392 and 28317717401.

It is not an unprimeable number, because it can be changed into a prime (28317717443) 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 in 7 ways as a sum of consecutive naturals, for example, 7718373 + ... + 7722040.

It is an arithmetic number, because the mean of its divisors is an integer number (3057201972).

Almost surely, 2^28317717442 is an apocalyptic number.

28317717442 is a deficient number, since it is larger than the sum of its proper divisors (20597514110).

28317717442 is a wasteful number, since it uses less digits than its factorization.

28317717442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15440553.

The product of its digits is 526848, while the sum is 46.

The spelling of 28317717442 in words is "twenty-eight billion, three hundred seventeen million, seven hundred seventeen thousand, four hundred forty-two".