1801244 has 6 divisors (see below), whose sum is σ = 3152184. Its totient is φ = 900620.

The previous prime is 1801237. The next prime is 1801259. The reversal of 1801244 is 4421081.

1801244 = 471² + 472² + ... + 478².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225152 + ... + 225159.

It is an arithmetic number, because the mean of its divisors is an integer number (525364).

2^1801244 is an apocalyptic number.

It is an amenable number.

1801244 is a deficient number, since it is larger than the sum of its proper divisors (1350940).

1801244 is a wasteful number, since it uses less digits than its factorization.

1801244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450315 (or 450313 counting only the distinct ones).

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

The square root of 1801244 is about 1342.1043178531. The cubic root of 1801244 is about 121.6720566408.

The spelling of 1801244 in words is "one million, eight hundred one thousand, two hundred forty-four".