28115240976 has 135 divisors (see below), whose sum is σ = 80087737431. Its totient is φ = 9207424512.

The previous prime is 28115240957. The next prime is 28115240981. The reversal of 28115240976 is 67904251182.

The square root of 28115240976 is 167676.

It is a perfect power (a square), and thus also a powerful number.

28115240976 is a `hidden beast` number, since 28 + 1 + 152 + 409 + 76 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 7558563600 + 20556677376 = 86940^2 + 143376^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 179077890 + ... + 179078046.

Almost surely, 2^28115240976 is an apocalyptic number.

28115240976 is the 167676-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28115240976

28115240976 is an abundant number, since it is smaller than the sum of its proper divisors (51972496455).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28115240976 is an equidigital number, since it uses as much as digits as its factorization.

28115240976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 28115240976 in words is "twenty-eight billion, one hundred fifteen million, two hundred forty thousand, nine hundred seventy-six".