71246320 has 40 divisors (see below), whose sum is σ = 175395024. Its totient is φ = 26821632.

The previous prime is 71246317. The next prime is 71246327. The reversal of 71246320 is 2364217.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×71246320² = 10152076227084800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71246327) 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 in 7 ways as a sum of consecutive naturals, for example, 24834 + ... + 27553.

Almost surely, 2^71246320 is an apocalyptic number.

It is an amenable number.

71246320 is an abundant number, since it is smaller than the sum of its proper divisors (104148704).

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

71246320 is a wasteful number, since it uses less digits than its factorization.

71246320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52417 (or 52411 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 71246320 is about 8440.7535208653. The cubic root of 71246320 is about 414.5600796252.

The spelling of 71246320 in words is "seventy-one million, two hundred forty-six thousand, three hundred twenty".