71176980 has 96 divisors (see below), whose sum is σ = 229614336. Its totient is φ = 16137216.

The previous prime is 71176969. The next prime is 71176993. The reversal of 71176980 is 8967117.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56922 + ... + 58158.

It is an arithmetic number, because the mean of its divisors is an integer number (2391816).

Almost surely, 2^71176980 is an apocalyptic number.

71176980 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71176980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114807168).

71176980 is an abundant number, since it is smaller than the sum of its proper divisors (158437356).

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

71176980 is a wasteful number, since it uses less digits than its factorization.

71176980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393 (or 1391 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 71176980 is about 8436.6450677980. The cubic root of 71176980 is about 414.4255467050.

The spelling of 71176980 in words is "seventy-one million, one hundred seventy-six thousand, nine hundred eighty".