71272256 has 56 divisors (see below), whose sum is σ = 159654240. Its totient is φ = 31270400.

The previous prime is 71272247. The next prime is 71272259. The reversal of 71272256 is 65227217.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71272259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18671 + ... + 22161.

Almost surely, 2^71272256 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 71272256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79827120).

71272256 is an abundant number, since it is smaller than the sum of its proper divisors (88381984).

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

71272256 is a wasteful number, since it uses less digits than its factorization.

71272256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543 (or 3533 counting only the distinct ones).

The product of its digits is 11760, while the sum is 32.

The square root of 71272256 is about 8442.2897367953. The cubic root of 71272256 is about 414.6103780163.

The spelling of 71272256 in words is "seventy-one million, two hundred seventy-two thousand, two hundred fifty-six".