71173120 has 44 divisors (see below), whose sum is σ = 170744364. Its totient is φ = 28467200.

The previous prime is 71173111. The next prime is 71173129. The reversal of 71173120 is 2137117.

It is an interprime number because it is at equal distance from previous prime (71173111) and next prime (71173129).

It can be written as a sum of positive squares in 2 ways, for example, as 42614784 + 28558336 = 6528^2 + 5344^2 .

It is a super-2 number, since 2×71173120² = 10131226021068800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71173091 and 71173100.

It is not an unprimeable number, because it can be changed into a prime (71173129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1831 + ... + 12070.

Almost surely, 2^71173120 is an apocalyptic number.

It is an amenable number.

71173120 is an abundant number, since it is smaller than the sum of its proper divisors (99571244).

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

71173120 is a wasteful number, since it uses less digits than its factorization.

71173120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13926 (or 13908 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 22.

The square root of 71173120 is about 8436.4163007761. The cubic root of 71173120 is about 414.4180549967.

The spelling of 71173120 in words is "seventy-one million, one hundred seventy-three thousand, one hundred twenty".