71149722 has 32 divisors (see below), whose sum is σ = 164216832. Its totient is φ = 20129904.

The previous prime is 71149721. The next prime is 71149733. The reversal of 71149722 is 22794117.

It is not an unprimeable number, because it can be changed into a prime (71149721) 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 15 ways as a sum of consecutive naturals, for example, 3898 + ... + 12549.

It is an arithmetic number, because the mean of its divisors is an integer number (5131776).

Almost surely, 2^71149722 is an apocalyptic number.

71149722 is an abundant number, since it is smaller than the sum of its proper divisors (93067110).

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

71149722 is a wasteful number, since it uses less digits than its factorization.

71149722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16562.

The product of its digits is 7056, while the sum is 33.

The square root of 71149722 is about 8435.0294605295. The cubic root of 71149722 is about 414.3726370242.

It can be divided in two parts, 7114 and 9722, that added together give a triangular number (16836 = T₁₈₃).

The spelling of 71149722 in words is "seventy-one million, one hundred forty-nine thousand, seven hundred twenty-two".