71275872 has 24 divisors (see below), whose sum is σ = 187099416. Its totient is φ = 23758592.

The previous prime is 71275871. The next prime is 71275879. The reversal of 71275872 is 27857217.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 71275872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71275871) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 371133 + ... + 371324.

It is an arithmetic number, because the mean of its divisors is an integer number (7795809).

Almost surely, 2^71275872 is an apocalyptic number.

It is an amenable number.

71275872 is an abundant number, since it is smaller than the sum of its proper divisors (115823544).

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

71275872 is a wasteful number, since it uses less digits than its factorization.

71275872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742470 (or 742462 counting only the distinct ones).

The product of its digits is 54880, while the sum is 39.

The square root of 71275872 is about 8442.5038939878. The cubic root of 71275872 is about 414.6173896543.

The spelling of 71275872 in words is "seventy-one million, two hundred seventy-five thousand, eight hundred seventy-two".