71210256 has 80 divisors (see below), whose sum is σ = 199778880. Its totient is φ = 21726720.

The previous prime is 71210239. The next prime is 71210261. The reversal of 71210256 is 65201217.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86326 + ... + 87146.

It is an arithmetic number, because the mean of its divisors is an integer number (2497236).

Almost surely, 2^71210256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71210256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99889440).

71210256 is an abundant number, since it is smaller than the sum of its proper divisors (128568624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71210256 is a wasteful number, since it uses less digits than its factorization.

71210256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 71210256 is about 8438.6169482919. The cubic root of 71210256 is about 414.4901194362.

The spelling of 71210256 in words is "seventy-one million, two hundred ten thousand, two hundred fifty-six".