1944720 has 120 divisors (see below), whose sum is σ = 6799416. Its totient is φ = 497664.

The previous prime is 1944713. The next prime is 1944721. The reversal of 1944720 is 274491.

It is a happy number.

1944720 is a `hidden beast` number, since 194 + 472 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 589824 + 1354896 = 768^2 + 1164^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (1944721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26604 + ... + 26676.

2^1944720 is an apocalyptic number.

1944720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1944720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3399708).

1944720 is an abundant number, since it is smaller than the sum of its proper divisors (4854696).

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

1944720 is a wasteful number, since it uses less digits than its factorization.

1944720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1944720 is about 1394.5321796215. The cubic root of 1944720 is about 124.8204355096.

The spelling of 1944720 in words is "one million, nine hundred forty-four thousand, seven hundred twenty".