71257396 has 12 divisors (see below), whose sum is σ = 142514848. Its totient is φ = 30538872.

The previous prime is 71257393. The next prime is 71257441. The reversal of 71257396 is 69375217.

71257396 is an admirable number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71257393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1272426 + ... + 1272481.

Almost surely, 2^71257396 is an apocalyptic number.

It is an amenable number.

71257396 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71257396 is a wasteful number, since it uses less digits than its factorization.

71257396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2544918 (or 2544916 counting only the distinct ones).

The product of its digits is 79380, while the sum is 40.

The square root of 71257396 is about 8441.4095979285. The cubic root of 71257396 is about 414.5815611068.

The spelling of 71257396 in words is "seventy-one million, two hundred fifty-seven thousand, three hundred ninety-six".