71156672 has 56 divisors (see below), whose sum is σ = 149961600. Its totient is φ = 33405696.

The previous prime is 71156663. The next prime is 71156699. The reversal of 71156672 is 27665117.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198029 + ... + 198387.

Almost surely, 2^71156672 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 71156672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74980800).

71156672 is an abundant number, since it is smaller than the sum of its proper divisors (78804928).

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

71156672 is a wasteful number, since it uses less digits than its factorization.

71156672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553 (or 543 counting only the distinct ones).

The product of its digits is 17640, while the sum is 35.

The square root of 71156672 is about 8435.4414229488. The cubic root of 71156672 is about 414.3861287427.

The spelling of 71156672 in words is "seventy-one million, one hundred fifty-six thousand, six hundred seventy-two".