1827940 has 12 divisors (see below), whose sum is σ = 3838716. Its totient is φ = 731168.

The previous prime is 1827937. The next prime is 1827949. The reversal of 1827940 is 497281.

It can be written as a sum of positive squares in 2 ways, for example, as 665856 + 1162084 = 816^2 + 1078^2 .

It is not an unprimeable number, because it can be changed into a prime (1827949) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 45679 + ... + 45718.

It is an arithmetic number, because the mean of its divisors is an integer number (319893).

2^1827940 is an apocalyptic number.

1827940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1827940 is an abundant number, since it is smaller than the sum of its proper divisors (2010776).

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

1827940 is a wasteful number, since it uses less digits than its factorization.

1827940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91406 (or 91404 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1827940 is about 1352.0133135439. The cubic root of 1827940 is about 122.2702064422.

The spelling of 1827940 in words is "one million, eight hundred twenty-seven thousand, nine hundred forty".