71000144 has 20 divisors (see below), whose sum is σ = 139306560. Its totient is φ = 35050080.

The previous prime is 71000141. The next prime is 71000147. The reversal of 71000144 is 44100017.

It is an interprime number because it is at equal distance from previous prime (71000141) and next prime (71000147).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71000141) 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, 26822 + ... + 29349.

It is an arithmetic number, because the mean of its divisors is an integer number (6965328).

Almost surely, 2^71000144 is an apocalyptic number.

It is an amenable number.

71000144 is a deficient number, since it is larger than the sum of its proper divisors (68306416).

71000144 is a wasteful number, since it uses less digits than its factorization.

71000144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56258 (or 56252 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 71000144 is about 8426.1583180000. The cubic root of 71000144 is about 414.0820548847.

The spelling of 71000144 in words is "seventy-one million, one hundred forty-four", and thus it is an aban number.