7823871172 has 24 divisors (see below), whose sum is σ = 15612341976. Its totient is φ = 3398604288.

The previous prime is 7823871127. The next prime is 7823871193. The reversal of 7823871172 is 2711783287.

It can be written as a sum of positive squares in 4 ways, for example, as 6482116 + 7817389056 = 2546^2 + 88416^2 .

It is a super-2 number, since 2×7823871172² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4424383 + ... + 4426150.

It is an arithmetic number, because the mean of its divisors is an integer number (650514249).

Almost surely, 2^7823871172 is an apocalyptic number.

It is an amenable number.

7823871172 is a deficient number, since it is larger than the sum of its proper divisors (7788470804).

7823871172 is a wasteful number, since it uses less digits than its factorization.

7823871172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8850567 (or 8850565 counting only the distinct ones).

The product of its digits is 263424, while the sum is 46.

The square root of 7823871172 is about 88452.6493215438. The cubic root of 7823871172 is about 1985.2135474858.

The spelling of 7823871172 in words is "seven billion, eight hundred twenty-three million, eight hundred seventy-one thousand, one hundred seventy-two".