71520896 has 16 divisors (see below), whose sum is σ = 142483290. Its totient is φ = 35760384.

The previous prime is 71520877. The next prime is 71520899. The reversal of 71520896 is 69802517.

It can be written as a sum of positive squares in only one way, i.e., 71233600 + 287296 = 8440^2 + 536^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (71520899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 279251 + ... + 279506.

Almost surely, 2^71520896 is an apocalyptic number.

It is an amenable number.

71520896 is a deficient number, since it is larger than the sum of its proper divisors (70962394).

71520896 is an equidigital number, since it uses as much as digits as its factorization.

71520896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558771 (or 558759 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 71520896 is about 8457.0027787627. The cubic root of 71520896 is about 415.0919542692.

The spelling of 71520896 in words is "seventy-one million, five hundred twenty thousand, eight hundred ninety-six".