1944220 has 24 divisors (see below), whose sum is σ = 4184208. Its totient is φ = 758400.

The previous prime is 1944211. The next prime is 1944223. The reversal of 1944220 is 224491.

It is a junction number, because it is equal to n+sod(n) for n = 1944191 and 1944200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366 + ... + 2005.

It is an arithmetic number, because the mean of its divisors is an integer number (174342).

2^1944220 is an apocalyptic number.

1944220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1944220 is an abundant number, since it is smaller than the sum of its proper divisors (2239988).

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

1944220 is a wasteful number, since it uses less digits than its factorization.

1944220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421 (or 2419 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1944220 is about 1394.3528965079. The cubic root of 1944220 is about 124.8097372142.

The spelling of 1944220 in words is "one million, nine hundred forty-four thousand, two hundred twenty".