371988 has 18 divisors (see below), whose sum is σ = 940394. Its totient is φ = 123984.

The previous prime is 371981. The next prime is 371999. The reversal of 371988 is 889173.

It can be written as a sum of positive squares in only one way, i.e., 345744 + 26244 = 588^2 + 162^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 10333 = 371988 / (3 + 7 + 1 + 9 + 8 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (371981) by changing a digit.

371988 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5131 + ... + 5202.

2³⁷¹⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

371988 is an abundant number, since it is smaller than the sum of its proper divisors (568406).

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

371988 is a wasteful number, since it uses less digits than its factorization.

371988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10343 (or 10338 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 371988 is about 609.9081898122. The cubic root of 371988 is about 71.9188901434.

It can be divided in two parts, 37 and 1988, that added together give a square (2025 = 45²).

The spelling of 371988 in words is "three hundred seventy-one thousand, nine hundred eighty-eight".