1944020 has 24 divisors (see below), whose sum is σ = 4397064. Its totient is φ = 717696.

The previous prime is 1944013. The next prime is 1944049. The reversal of 1944020 is 204491.

1944020 = T₃₂ + T₃₃ + ... + T₂₂₆.

It can be written as a sum of positive squares in 4 ways, for example, as 315844 + 1628176 = 562^2 + 1276^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1943983 and 1944001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3479 + ... + 3998.

It is an arithmetic number, because the mean of its divisors is an integer number (183211).

2^1944020 is an apocalyptic number.

1944020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1944020 is an abundant number, since it is smaller than the sum of its proper divisors (2453044).

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

1944020 is a wasteful number, since it uses less digits than its factorization.

1944020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7499 (or 7497 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1944020 is about 1394.2811768076. The cubic root of 1944020 is about 124.8054573824.

The spelling of 1944020 in words is "one million, nine hundred forty-four thousand, twenty".