1388271 has 16 divisors (see below), whose sum is σ = 1983744. Its totient is φ = 860544.

The previous prime is 1388269. The next prime is 1388279. The reversal of 1388271 is 1728831.

It is a happy number.

It is not a de Polignac number, because 1388271 - 2¹ = 1388269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388279) 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, 8230 + ... + 8396.

It is an arithmetic number, because the mean of its divisors is an integer number (123984).

2^1388271 is an apocalyptic number.

1388271 is a deficient number, since it is larger than the sum of its proper divisors (595473).

1388271 is a wasteful number, since it uses less digits than its factorization.

1388271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350.

The product of its digits is 2688, while the sum is 30.

The square root of 1388271 is about 1178.2491247610. The cubic root of 1388271 is about 111.5556104856. Note that the first 3 decimals are identical.

The spelling of 1388271 in words is "one million, three hundred eighty-eight thousand, two hundred seventy-one".