71727772 has 12 divisors (see below), whose sum is σ = 125826120. Its totient is φ = 35777456.

The previous prime is 71727763. The next prime is 71727797. The reversal of 71727772 is 27772717.

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, 19723 + ... + 23074.

It is an arithmetic number, because the mean of its divisors is an integer number (10485510).

Almost surely, 2^71727772 is an apocalyptic number.

It is an amenable number.

71727772 is a deficient number, since it is larger than the sum of its proper divisors (54098348).

71727772 is a wasteful number, since it uses less digits than its factorization.

71727772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43220 (or 43218 counting only the distinct ones).

The product of its digits is 67228, while the sum is 40.

The square root of 71727772 is about 8469.2249940594. The cubic root of 71727772 is about 415.4917903289.

The spelling of 71727772 in words is "seventy-one million, seven hundred twenty-seven thousand, seven hundred seventy-two".