1988271 has 6 divisors (see below), whose sum is σ = 2871960. Its totient is φ = 1325508.

The previous prime is 1988267. The next prime is 1988279. The reversal of 1988271 is 1728891.

It is not a de Polignac number, because 1988271 - 2² = 1988267 is a prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988279) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110451 + ... + 110468.

It is an arithmetic number, because the mean of its divisors is an integer number (478660).

2^1988271 is an apocalyptic number.

1988271 is a deficient number, since it is larger than the sum of its proper divisors (883689).

1988271 is a wasteful number, since it uses less digits than its factorization.

1988271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220925 (or 220922 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 1988271 is about 1410.0606369940. The cubic root of 1988271 is about 125.7453283853.

The spelling of 1988271 in words is "one million, nine hundred eighty-eight thousand, two hundred seventy-one".