1988316 has 36 divisors (see below), whose sum is σ = 5484024. Its totient is φ = 602400.

The previous prime is 1988299. The next prime is 1988323. The reversal of 1988316 is 6138891.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2115 + ... + 2906.

It is an arithmetic number, because the mean of its divisors is an integer number (152334).

2^1988316 is an apocalyptic number.

It is an amenable number.

1988316 is an abundant number, since it is smaller than the sum of its proper divisors (3495708).

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

1988316 is a wasteful number, since it uses less digits than its factorization.

1988316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5042 (or 5037 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 1988316 is about 1410.0765936643. The cubic root of 1988316 is about 125.7462770314.

It can be divided in two parts, 1988 and 316, that added together give a square (2304 = 48²).

The spelling of 1988316 in words is "one million, nine hundred eighty-eight thousand, three hundred sixteen".