71407712 has 12 divisors (see below), whose sum is σ = 140583996. Its totient is φ = 35703840.

The previous prime is 71407619. The next prime is 71407717. The reversal of 71407712 is 21770417.

It is a super-2 number, since 2×71407712² = 10198122666149888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71407717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115714 + ... + 1115777.

It is an arithmetic number, because the mean of its divisors is an integer number (11715333).

Almost surely, 2^71407712 is an apocalyptic number.

It is an amenable number.

71407712 is a deficient number, since it is larger than the sum of its proper divisors (69176284).

71407712 is a wasteful number, since it uses less digits than its factorization.

71407712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231501 (or 2231493 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 29.

The square root of 71407712 is about 8450.3083967391. The cubic root of 71407712 is about 414.8728734338.

The spelling of 71407712 in words is "seventy-one million, four hundred seven thousand, seven hundred twelve".