71378252 has 12 divisors (see below), whose sum is σ = 136267656. Its totient is φ = 32444640.

The previous prime is 71378239. The next prime is 71378297. The reversal of 71378252 is 25287317.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 811073 + ... + 811160.

It is an arithmetic number, because the mean of its divisors is an integer number (11355638).

Almost surely, 2^71378252 is an apocalyptic number.

It is an amenable number.

71378252 is a deficient number, since it is larger than the sum of its proper divisors (64889404).

71378252 is a wasteful number, since it uses less digits than its factorization.

71378252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622248 (or 1622246 counting only the distinct ones).

The product of its digits is 23520, while the sum is 35.

The square root of 71378252 is about 8448.5650852674. The cubic root of 71378252 is about 414.8158122020.

The spelling of 71378252 in words is "seventy-one million, three hundred seventy-eight thousand, two hundred fifty-two".