7271138 has 32 divisors (see below), whose sum is σ = 13353984. Its totient is φ = 2898432.

The previous prime is 7271137. The next prime is 7271177. The reversal of 7271138 is 8311727.

It is a self number, because there is not a number n which added to its sum of digits gives 7271138.

It is not an unprimeable number, because it can be changed into a prime (7271137) 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, 32495 + ... + 32717.

It is an arithmetic number, because the mean of its divisors is an integer number (417312).

Almost surely, 2^7271138 is an apocalyptic number.

7271138 is a deficient number, since it is larger than the sum of its proper divisors (6082846).

7271138 is a wasteful number, since it uses less digits than its factorization.

7271138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386.

The product of its digits is 2352, while the sum is 29.

The square root of 7271138 is about 2696.5047747037. The cubic root of 7271138 is about 193.7317474307.

The spelling of 7271138 in words is "seven million, two hundred seventy-one thousand, one hundred thirty-eight".