71089472 has 14 divisors (see below), whose sum is σ = 141068298. Its totient is φ = 35544704.

The previous prime is 71089471. The next prime is 71089511. The reversal of 71089472 is 27498017.

It can be written as a sum of positive squares in only one way, i.e., 49336576 + 21752896 = 7024^2 + 4664^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71089471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555323 + ... + 555450.

It is an arithmetic number, because the mean of its divisors is an integer number (10076307).

Almost surely, 2^71089472 is an apocalyptic number.

It is an amenable number.

71089472 is a deficient number, since it is larger than the sum of its proper divisors (69978826).

71089472 is a wasteful number, since it uses less digits than its factorization.

71089472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110785 (or 1110775 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 71089472 is about 8431.4572880375. The cubic root of 71089472 is about 414.2556396038.

The spelling of 71089472 in words is "seventy-one million, eighty-nine thousand, four hundred seventy-two".