8131515282 has 24 divisors (see below), whose sum is σ = 19219945680. Its totient is φ = 2464095480.

The previous prime is 8131515263. The next prime is 8131515299. The reversal of 8131515282 is 2825151318.

8131515282 is a `hidden beast` number, since 8 + 131 + 515 + 2 + 8 + 2 = 666.

It is a super-2 number, since 2×8131515282² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20533932 + ... + 20534327.

It is an arithmetic number, because the mean of its divisors is an integer number (800831070).

Almost surely, 2^8131515282 is an apocalyptic number.

8131515282 is an abundant number, since it is smaller than the sum of its proper divisors (11088430398).

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

8131515282 is a wasteful number, since it uses less digits than its factorization.

8131515282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41068278 (or 41068275 counting only the distinct ones).

The product of its digits is 19200, while the sum is 36.

The square root of 8131515282 is about 90174.9149264916. The cubic root of 8131515282 is about 2010.9000928989.

The spelling of 8131515282 in words is "eight billion, one hundred thirty-one million, five hundred fifteen thousand, two hundred eighty-two".