1802940 has 48 divisors (see below), whose sum is σ = 5107200. Its totient is φ = 475200.

The previous prime is 1802923. The next prime is 1802989. The reversal of 1802940 is 492081.

It is a self number, because there is not a number n which added to its sum of digits gives 1802940.

It is a congruent number.

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, 8961 + ... + 9159.

It is an arithmetic number, because the mean of its divisors is an integer number (106400).

2^1802940 is an apocalyptic number.

1802940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1802940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2553600).

1802940 is an abundant number, since it is smaller than the sum of its proper divisors (3304260).

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

1802940 is a wasteful number, since it uses less digits than its factorization.

1802940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1802940 is about 1342.7360127739. The cubic root of 1802940 is about 121.7102323082.

The spelling of 1802940 in words is "one million, eight hundred two thousand, nine hundred forty".