7271889 has 16 divisors (see below), whose sum is σ = 10305600. Its totient is φ = 4548096.

The previous prime is 7271881. The next prime is 7271897. The reversal of 7271889 is 9881727.

It is an interprime number because it is at equal distance from previous prime (7271881) and next prime (7271897).

It is not a de Polignac number, because 7271889 - 2³ = 7271881 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7271889.

It is not an unprimeable number, because it can be changed into a prime (7271881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5877 + ... + 7005.

It is an arithmetic number, because the mean of its divisors is an integer number (644100).

Almost surely, 2^7271889 is an apocalyptic number.

It is an amenable number.

7271889 is a deficient number, since it is larger than the sum of its proper divisors (3033711).

7271889 is a wasteful number, since it uses less digits than its factorization.

7271889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264.

The product of its digits is 56448, while the sum is 42.

The square root of 7271889 is about 2696.6440254509. The cubic root of 7271889 is about 193.7384170668.

The spelling of 7271889 in words is "seven million, two hundred seventy-one thousand, eight hundred eighty-nine".