71947222 has 16 divisors (see below), whose sum is σ = 109932480. Its totient is φ = 35308872.

The previous prime is 71947219. The next prime is 71947259. The reversal of 71947222 is 22274917.

It is a happy number.

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, 25729 + ... + 28387.

It is an arithmetic number, because the mean of its divisors is an integer number (6870780).

Almost surely, 2^71947222 is an apocalyptic number.

71947222 is a deficient number, since it is larger than the sum of its proper divisors (37985258).

71947222 is a wasteful number, since it uses less digits than its factorization.

71947222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2907.

The product of its digits is 14112, while the sum is 34.

The square root of 71947222 is about 8482.1708306306. The cubic root of 71947222 is about 415.9150891479.

The spelling of 71947222 in words is "seventy-one million, nine hundred forty-seven thousand, two hundred twenty-two".