1271688 has 32 divisors (see below), whose sum is σ = 3468960. Its totient is φ = 385280.

The previous prime is 1271687. The next prime is 1271701. The reversal of 1271688 is 8861721.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1271687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2145 + ... + 2672.

It is an arithmetic number, because the mean of its divisors is an integer number (108405).

2^1271688 is an apocalyptic number.

It is an amenable number.

1271688 is an abundant number, since it is smaller than the sum of its proper divisors (2197272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1271688 is a wasteful number, since it uses less digits than its factorization.

1271688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4837 (or 4833 counting only the distinct ones).

The product of its digits is 5376, while the sum is 33.

The square root of 1271688 is about 1127.6914471610. The cubic root of 1271688 is about 108.3411707676.

Adding to 1271688 its sum of digits (33), we get a palindrome (1271721).

The spelling of 1271688 in words is "one million, two hundred seventy-one thousand, six hundred eighty-eight".