71089473 has 32 divisors (see below), whose sum is σ = 117779200. Its totient is φ = 37138176.

The previous prime is 71089471. The next prime is 71089511. The reversal of 71089473 is 37498017.

It is not a de Polignac number, because 71089473 - 2¹ = 71089471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28563 + ... + 30951.

It is an arithmetic number, because the mean of its divisors is an integer number (3680600).

Almost surely, 2^71089473 is an apocalyptic number.

It is an amenable number.

71089473 is a deficient number, since it is larger than the sum of its proper divisors (46689727).

71089473 is a wasteful number, since it uses less digits than its factorization.

71089473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 71089473 is about 8431.4573473392. The cubic root of 71089473 is about 414.2556415462.

The spelling of 71089473 in words is "seventy-one million, eighty-nine thousand, four hundred seventy-three".