1840284 has 72 divisors (see below), whose sum is σ = 5136768. Its totient is φ = 552960.

The previous prime is 1840261. The next prime is 1840297. The reversal of 1840284 is 4820481.

1840284 = 42² + 43² + ... + 177².

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18924 + ... + 19020.

It is an arithmetic number, because the mean of its divisors is an integer number (71344).

2^1840284 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 1840284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2568384).

1840284 is an abundant number, since it is smaller than the sum of its proper divisors (3296484).

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

1840284 is a wasteful number, since it uses less digits than its factorization.

1840284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 1840284 is about 1356.5706763748. The cubic root of 1840284 is about 122.5448176980.

The spelling of 1840284 in words is "one million, eight hundred forty thousand, two hundred eighty-four".