71998952 has 32 divisors (see below), whose sum is σ = 139043520. Its totient is φ = 34930560.

The previous prime is 71998943. The next prime is 71998973. The reversal of 71998952 is 25989917.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 71998952.

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 7 ways as a sum of consecutive naturals, for example, 73973 + ... + 74939.

It is an arithmetic number, because the mean of its divisors is an integer number (4345110).

Almost surely, 2^71998952 is an apocalyptic number.

It is an amenable number.

71998952 is a deficient number, since it is larger than the sum of its proper divisors (67044568).

71998952 is a wasteful number, since it uses less digits than its factorization.

71998952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241 (or 1237 counting only the distinct ones).

The product of its digits is 408240, while the sum is 50.

The square root of 71998952 is about 8485.2196200216. The cubic root of 71998952 is about 416.0147461489.

The spelling of 71998952 in words is "seventy-one million, nine hundred ninety-eight thousand, nine hundred fifty-two".