1828420 has 24 divisors (see below), whose sum is σ = 4189248. Its totient is φ = 664800.

The previous prime is 1828399. The next prime is 1828423. The reversal of 1828420 is 248281.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1828423) 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 7 ways as a sum of consecutive naturals, for example, 3936 + ... + 4375.

It is an arithmetic number, because the mean of its divisors is an integer number (174552).

2^1828420 is an apocalyptic number.

1828420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1828420 is an abundant number, since it is smaller than the sum of its proper divisors (2360828).

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

1828420 is a wasteful number, since it uses less digits than its factorization.

1828420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8331 (or 8329 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 1828420 is about 1352.1908149370. The cubic root of 1828420 is about 122.2809078442.

The spelling of 1828420 in words is "one million, eight hundred twenty-eight thousand, four hundred twenty".