71923156 has 6 divisors (see below), whose sum is σ = 125865530. Its totient is φ = 35961576.

The previous prime is 71923147. The next prime is 71923157. The reversal of 71923156 is 65132917.

It can be written as a sum of positive squares in only one way, i.e., 71673156 + 250000 = 8466^2 + 500^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71923157) 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 as a sum of consecutive naturals, namely, 8990391 + ... + 8990398.

Almost surely, 2^71923156 is an apocalyptic number.

It is an amenable number.

71923156 is a deficient number, since it is larger than the sum of its proper divisors (53942374).

71923156 is a wasteful number, since it uses less digits than its factorization.

71923156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17980793 (or 17980791 counting only the distinct ones).

The product of its digits is 11340, while the sum is 34.

The square root of 71923156 is about 8480.7520892902. The cubic root of 71923156 is about 415.8687101101.

The spelling of 71923156 in words is "seventy-one million, nine hundred twenty-three thousand, one hundred fifty-six".