71208980 has 24 divisors (see below), whose sum is σ = 150685920. Its totient is φ = 28265120.

The previous prime is 71208959. The next prime is 71208983. The reversal of 71208980 is 8980217.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 71208980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71208983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10970 + ... + 16209.

It is an arithmetic number, because the mean of its divisors is an integer number (6278580).

Almost surely, 2^71208980 is an apocalyptic number.

It is an amenable number.

71208980 is an abundant number, since it is smaller than the sum of its proper divisors (79476940).

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

71208980 is a wasteful number, since it uses less digits than its factorization.

71208980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27319 (or 27317 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 71208980 is about 8438.5413431469. The cubic root of 71208980 is about 414.4876437041.

The spelling of 71208980 in words is "seventy-one million, two hundred eight thousand, nine hundred eighty".