28481761996756 has 24 divisors (see below), whose sum is σ = 49961704996224. Its totient is φ = 14206993764480.

The previous prime is 28481761996741. The next prime is 28481761996759. The reversal of 28481761996756 is 65769916718482.

It is a super-2 number, since 2×28481761996756² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28481761996759) 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, 24389301 + ... + 25530403.

It is an arithmetic number, because the mean of its divisors is an integer number (2081737708176).

Almost surely, 2^{28481761996756} is an apocalyptic number.

It is an amenable number.

28481761996756 is a deficient number, since it is larger than the sum of its proper divisors (21479942999468).

28481761996756 is a wasteful number, since it uses less digits than its factorization.

28481761996756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155951 (or 1155949 counting only the distinct ones).

The product of its digits is 2194698240, while the sum is 79.

The spelling of 28481761996756 in words is "twenty-eight trillion, four hundred eighty-one billion, seven hundred sixty-one million, nine hundred ninety-six thousand, seven hundred fifty-six".