1977344 has 22 divisors (see below), whose sum is σ = 3954804. Its totient is φ = 988160.

The previous prime is 1977343. The next prime is 1977359. The reversal of 1977344 is 4437791.

It is not an unprimeable number, because it can be changed into a prime (1977343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59 + ... + 1989.

2^1977344 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 1977344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1977402).

1977344 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1977344 is an equidigital number, since it uses as much as digits as its factorization.

1977344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951 (or 1933 counting only the distinct ones).

The product of its digits is 21168, while the sum is 35.

The square root of 1977344 is about 1406.1806427341. The cubic root of 1977344 is about 125.5145509919.

The spelling of 1977344 in words is "one million, nine hundred seventy-seven thousand, three hundred forty-four".