71266320 has 60 divisors (see below), whose sum is σ = 239338476. Its totient is φ = 19004160.

The previous prime is 71266301. The next prime is 71266333. The reversal of 71266320 is 2366217.

It is a happy number.

71266320 is a `hidden beast` number, since 7 + 1 + 26 + 632 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13749264 + 57517056 = 3708^2 + 7584^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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 in 11 ways as a sum of consecutive naturals, for example, 48771 + ... + 50210.

Almost surely, 2^71266320 is an apocalyptic number.

It is an amenable number.

71266320 is an abundant number, since it is smaller than the sum of its proper divisors (168072156).

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

71266320 is a wasteful number, since it uses less digits than its factorization.

71266320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99000 (or 98991 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 71266320 is about 8441.9381660848. The cubic root of 71266320 is about 414.5988672468.

The spelling of 71266320 in words is "seventy-one million, two hundred sixty-six thousand, three hundred twenty".