71078452 has 6 divisors (see below), whose sum is σ = 124387298. Its totient is φ = 35539224.

The previous prime is 71078419. The next prime is 71078489. The reversal of 71078452 is 25487017.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 51753636 + 19324816 = 7194^2 + 4396^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8884803 + ... + 8884810.

Almost surely, 2^71078452 is an apocalyptic number.

It is an amenable number.

71078452 is a deficient number, since it is larger than the sum of its proper divisors (53308846).

71078452 is a wasteful number, since it uses less digits than its factorization.

71078452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17769617 (or 17769615 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 71078452 is about 8430.8037576497. The cubic root of 71078452 is about 414.2342330911.

The spelling of 71078452 in words is "seventy-one million, seventy-eight thousand, four hundred fifty-two".