1983420 has 48 divisors (see below), whose sum is σ = 6172320. Its totient is φ = 528768.

The previous prime is 1983413. The next prime is 1983427. The reversal of 1983420 is 243891.

It is an interprime number because it is at equal distance from previous prime (1983413) and next prime (1983427).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1983427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1297 + ... + 2376.

It is an arithmetic number, because the mean of its divisors is an integer number (128590).

2^1983420 is an apocalyptic number.

1983420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1983420 is an abundant number, since it is smaller than the sum of its proper divisors (4188900).

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

1983420 is a wasteful number, since it uses less digits than its factorization.

1983420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3691 (or 3683 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1983420 is about 1408.3394477185. The cubic root of 1983420 is about 125.6429802734.

The spelling of 1983420 in words is "one million, nine hundred eighty-three thousand, four hundred twenty".