71173080 has 160 divisors (see below), whose sum is σ = 261098640. Its totient is φ = 17245440.

The previous prime is 71173079. The next prime is 71173093. The reversal of 71173080 is 8037117.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 34642 + ... + 36638.

Almost surely, 2^71173080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71173080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130549320).

71173080 is an abundant number, since it is smaller than the sum of its proper divisors (189925560).

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

71173080 is a wasteful number, since it uses less digits than its factorization.

71173080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031 (or 2018 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 71173080 is about 8436.4139301009. The cubic root of 71173080 is about 414.4179773610.

The spelling of 71173080 in words is "seventy-one million, one hundred seventy-three thousand, eighty".