71720476 has 12 divisors (see below), whose sum is σ = 126001008. Its totient is φ = 35720192.

The previous prime is 71720471. The next prime is 71720491. The reversal of 71720476 is 67402717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71720471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33856 + ... + 35911.

It is an arithmetic number, because the mean of its divisors is an integer number (10500084).

Almost surely, 2^71720476 is an apocalyptic number.

It is an amenable number.

71720476 is a deficient number, since it is larger than the sum of its proper divisors (54280532).

71720476 is a wasteful number, since it uses less digits than its factorization.

71720476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70028 (or 70026 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 71720476 is about 8468.7942471169. The cubic root of 71720476 is about 415.4777021972.

The spelling of 71720476 in words is "seventy-one million, seven hundred twenty thousand, four hundred seventy-six".