1830020 has 24 divisors (see below), whose sum is σ = 3948504. Its totient is φ = 711936.

The previous prime is 1830013. The next prime is 1830029. The reversal of 1830020 is 200381.

It can be written as a sum of positive squares in 4 ways, for example, as 719104 + 1110916 = 848^2 + 1054^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1829977 and 1830004.

It is not an unprimeable number, because it can be changed into a prime (1830029) 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, 497 + ... + 1976.

It is an arithmetic number, because the mean of its divisors is an integer number (164521).

2^1830020 is an apocalyptic number.

1830020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1830020 is an abundant number, since it is smaller than the sum of its proper divisors (2118484).

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

1830020 is a wasteful number, since it uses less digits than its factorization.

1830020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2519 (or 2517 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1830020 is about 1352.7823180394. The cubic root of 1830020 is about 122.3165656638.

The spelling of 1830020 in words is "one million, eight hundred thirty thousand, twenty".