1983730 has 32 divisors (see below), whose sum is σ = 4323456. Its totient is φ = 639744.

The previous prime is 1983701. The next prime is 1983731. The reversal of 1983730 is 373891.

It is a junction number, because it is equal to n+sod(n) for n = 1983692 and 1983701.

It is not an unprimeable number, because it can be changed into a prime (1983731) 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 15 ways as a sum of consecutive naturals, for example, 357 + ... + 2023.

It is an arithmetic number, because the mean of its divisors is an integer number (135108).

2^1983730 is an apocalyptic number.

1983730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1983730 is an abundant number, since it is smaller than the sum of its proper divisors (2339726).

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

1983730 is a wasteful number, since it uses less digits than its factorization.

1983730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 1983730 is about 1408.4495021122. The cubic root of 1983730 is about 125.6495257512.

The spelling of 1983730 in words is "one million, nine hundred eighty-three thousand, seven hundred thirty".