71148712 has 8 divisors (see below), whose sum is σ = 133403850. Its totient is φ = 35574352.

The previous prime is 71148709. The next prime is 71148719. The reversal of 71148712 is 21784117.

It can be written as a sum of positive squares in only one way, i.e., 65512836 + 5635876 = 8094^2 + 2374^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (71148719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4446787 + ... + 4446802.

Almost surely, 2^71148712 is an apocalyptic number.

It is an amenable number.

71148712 is a deficient number, since it is larger than the sum of its proper divisors (62255138).

71148712 is a wasteful number, since it uses less digits than its factorization.

71148712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8893595 (or 8893591 counting only the distinct ones).

The product of its digits is 3136, while the sum is 31.

The square root of 71148712 is about 8434.9695909351. The cubic root of 71148712 is about 414.3706762840.

The spelling of 71148712 in words is "seventy-one million, one hundred forty-eight thousand, seven hundred twelve".