1800744 has 64 divisors (see below), whose sum is σ = 5184000. Its totient is φ = 515520.

The previous prime is 1800731. The next prime is 1800767. The reversal of 1800744 is 4470081.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4837 + ... + 5195.

It is an arithmetic number, because the mean of its divisors is an integer number (81000).

2^1800744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1800744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2592000).

1800744 is an abundant number, since it is smaller than the sum of its proper divisors (3383256).

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

1800744 is a wasteful number, since it uses less digits than its factorization.

1800744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 1800744 is about 1341.9180302835. The cubic root of 1800744 is about 121.6607974484.

It can be divided in two parts, 1 and 800744, that added together give a triangular number (800745 = T₁₂₆₅).

The spelling of 1800744 in words is "one million, eight hundred thousand, seven hundred forty-four".