71256726 has 64 divisors (see below), whose sum is σ = 168000000. Its totient is φ = 22324896.

The previous prime is 71256671. The next prime is 71256727. The reversal of 71256726 is 62765217.

71256726 is a `hidden beast` number, since 71 + 2 + 567 + 26 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71256727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204000 + ... + 204348.

It is an arithmetic number, because the mean of its divisors is an integer number (2625000).

Almost surely, 2^71256726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71256726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84000000).

71256726 is an abundant number, since it is smaller than the sum of its proper divisors (96743274).

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

71256726 is a wasteful number, since it uses less digits than its factorization.

71256726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 572 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 71256726 is about 8441.3699125201. The cubic root of 71256726 is about 414.5802617305.

The spelling of 71256726 in words is "seventy-one million, two hundred fifty-six thousand, seven hundred twenty-six".