1441820 has 12 divisors (see below), whose sum is σ = 3027864. Its totient is φ = 576720.

The previous prime is 1441807. The next prime is 1441837. The reversal of 1441820 is 281441.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 72091 = 1441820 / (1 + 4 + 4 + 1 + 8 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1441792 and 1441801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36026 + ... + 36065.

It is an arithmetic number, because the mean of its divisors is an integer number (252322).

2^1441820 is an apocalyptic number.

1441820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1441820 is an abundant number, since it is smaller than the sum of its proper divisors (1586044).

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

1441820 is a wasteful number, since it uses less digits than its factorization.

1441820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72100 (or 72098 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1441820 is about 1200.7580938724. The cubic root of 1441820 is about 112.9718780360.

The spelling of 1441820 in words is "one million, four hundred forty-one thousand, eight hundred twenty".