71223980 has 24 divisors (see below), whose sum is σ = 149802912. Its totient is φ = 28445312.

The previous prime is 71223967. The next prime is 71224009. The reversal of 71223980 is 8932217.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12464 + ... + 17256.

It is an arithmetic number, because the mean of its divisors is an integer number (6241788).

Almost surely, 2^71223980 is an apocalyptic number.

It is an amenable number.

71223980 is an abundant number, since it is smaller than the sum of its proper divisors (78578932).

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

71223980 is a wasteful number, since it uses less digits than its factorization.

71223980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5545 (or 5543 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 71223980 is about 8439.4300755442. The cubic root of 71223980 is about 414.5167452685.

The spelling of 71223980 in words is "seventy-one million, two hundred twenty-three thousand, nine hundred eighty".