71520996 has 12 divisors (see below), whose sum is σ = 166882352. Its totient is φ = 23840328.

The previous prime is 71520973. The next prime is 71521001. The reversal of 71520996 is 69902517.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 2980030 + ... + 2980053.

Almost surely, 2^71520996 is an apocalyptic number.

It is an amenable number.

71520996 is an abundant number, since it is smaller than the sum of its proper divisors (95361356).

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

71520996 is a wasteful number, since it uses less digits than its factorization.

71520996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5960090 (or 5960088 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 71520996 is about 8457.0086910207. The cubic root of 71520996 is about 415.0921477286.

The spelling of 71520996 in words is "seventy-one million, five hundred twenty thousand, nine hundred ninety-six".