71089412 has 48 divisors (see below), whose sum is σ = 138915840. Its totient is φ = 31676832.

The previous prime is 71089399. The next prime is 71089429. The reversal of 71089412 is 21498017.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116813 + ... + 117419.

It is an arithmetic number, because the mean of its divisors is an integer number (2894080).

Almost surely, 2^71089412 is an apocalyptic number.

It is an amenable number.

71089412 is a deficient number, since it is larger than the sum of its proper divisors (67826428).

71089412 is a wasteful number, since it uses less digits than its factorization.

71089412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 71089412 is about 8431.4537299329. The cubic root of 71089412 is about 414.2555230589.

The spelling of 71089412 in words is "seventy-one million, eighty-nine thousand, four hundred twelve".