28915788751982 has 32 divisors (see below), whose sum is σ = 47331104160384. Its totient is φ = 13139552484000.

The previous prime is 28915788751981. The next prime is 28915788751991.

28915788751982 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×28915788751982² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28915788751897 and 28915788751906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28915788751981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1438085573 + ... + 1438105679.

It is an arithmetic number, because the mean of its divisors is an integer number (1479097005012).

Almost surely, 2^{28915788751982} is an apocalyptic number.

28915788751982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28915788751982 is a deficient number, since it is larger than the sum of its proper divisors (18415315408402).

28915788751982 is a wasteful number, since it uses less digits than its factorization.

28915788751982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36704.

The product of its digits is 1625702400, while the sum is 80.

The spelling of 28915788751982 in words is "twenty-eight trillion, nine hundred fifteen billion, seven hundred eighty-eight million, seven hundred fifty-one thousand, nine hundred eighty-two".