71047772 has 12 divisors (see below), whose sum is σ = 126679896. Its totient is φ = 34853520.

The previous prime is 71047771. The next prime is 71047831. The reversal of 71047772 is 27774017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71047771) 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, 167354 + ... + 167777.

It is an arithmetic number, because the mean of its divisors is an integer number (10556658).

Almost surely, 2^71047772 is an apocalyptic number.

It is an amenable number.

71047772 is a deficient number, since it is larger than the sum of its proper divisors (55632124).

71047772 is a wasteful number, since it uses less digits than its factorization.

71047772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335188 (or 335186 counting only the distinct ones).

The product of its (nonzero) digits is 19208, while the sum is 35.

The square root of 71047772 is about 8428.9840431691. The cubic root of 71047772 is about 414.1746250812.

The spelling of 71047772 in words is "seventy-one million, forty-seven thousand, seven hundred seventy-two".