71276980 has 48 divisors (see below), whose sum is σ = 159122880. Its totient is φ = 26742528.

The previous prime is 71276951. The next prime is 71277001. The reversal of 71276980 is 8967217.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39784 + ... + 41536.

It is an arithmetic number, because the mean of its divisors is an integer number (3315060).

Almost surely, 2^71276980 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 71276980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79561440).

71276980 is an abundant number, since it is smaller than the sum of its proper divisors (87845900).

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

71276980 is a wasteful number, since it uses less digits than its factorization.

71276980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888 (or 1886 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 71276980 is about 8442.5695140757. The cubic root of 71276980 is about 414.6195380844.

The spelling of 71276980 in words is "seventy-one million, two hundred seventy-six thousand, nine hundred eighty".