71275672 has 64 divisors (see below), whose sum is σ = 149597280. Its totient is φ = 31629312.

The previous prime is 71275657. The next prime is 71275681. The reversal of 71275672 is 27657217.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369208 + ... + 369400.

Almost surely, 2^71275672 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 71275672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74798640).

71275672 is an abundant number, since it is smaller than the sum of its proper divisors (78321608).

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

71275672 is a wasteful number, since it uses less digits than its factorization.

71275672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 328 counting only the distinct ones).

The product of its digits is 41160, while the sum is 37.

The square root of 71275672 is about 8442.4920491523. The cubic root of 71275672 is about 414.6170018486.

The spelling of 71275672 in words is "seventy-one million, two hundred seventy-five thousand, six hundred seventy-two".