1967988 has 48 divisors (see below), whose sum is σ = 5310144. Its totient is φ = 560640.

The previous prime is 1967947. The next prime is 1968017. The reversal of 1967988 is 8897691.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1806 + ... + 2682.

It is an arithmetic number, because the mean of its divisors is an integer number (110628).

2^1967988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1967988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2655072).

1967988 is an abundant number, since it is smaller than the sum of its proper divisors (3342156).

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

1967988 is a wasteful number, since it uses less digits than its factorization.

1967988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912 (or 910 counting only the distinct ones).

The product of its digits is 217728, while the sum is 48.

The square root of 1967988 is about 1402.8499563389. The cubic root of 1967988 is about 125.3162764123.

The spelling of 1967988 in words is "one million, nine hundred sixty-seven thousand, nine hundred eighty-eight".