71351772 has 12 divisors (see below), whose sum is σ = 166487496. Its totient is φ = 23783920.

The previous prime is 71351747. The next prime is 71351789. The reversal of 71351772 is 27715317.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 2972979 + ... + 2973002.

It is an arithmetic number, because the mean of its divisors is an integer number (13873958).

Almost surely, 2^71351772 is an apocalyptic number.

It is an amenable number.

71351772 is an abundant number, since it is smaller than the sum of its proper divisors (95135724).

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

71351772 is a wasteful number, since it uses less digits than its factorization.

71351772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5945988 (or 5945986 counting only the distinct ones).

The product of its digits is 10290, while the sum is 33.

The square root of 71351772 is about 8446.9978098730. The cubic root of 71351772 is about 414.7645095479.

The spelling of 71351772 in words is "seventy-one million, three hundred fifty-one thousand, seven hundred seventy-two".