71159072 has 24 divisors (see below), whose sum is σ = 142741116. Its totient is φ = 34907392.

The previous prime is 71159063. The next prime is 71159083. The reversal of 71159072 is 27095117.

It can be written as a sum of positive squares in 2 ways, for example, as 69822736 + 1336336 = 8356^2 + 1156^2 .

It is a super-2 number, since 2×71159072² = 10127227055802368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19283 + ... + 22674.

Almost surely, 2^71159072 is an apocalyptic number.

It is an amenable number.

71159072 is an abundant number, since it is smaller than the sum of its proper divisors (71582044).

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

71159072 is a wasteful number, since it uses less digits than its factorization.

71159072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42020 (or 42012 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 71159072 is about 8435.5836786793. The cubic root of 71159072 is about 414.3907875493.

The spelling of 71159072 in words is "seventy-one million, one hundred fifty-nine thousand, seventy-two".