1983620 has 12 divisors (see below), whose sum is σ = 4165644. Its totient is φ = 793440.

The previous prime is 1983601. The next prime is 1983643. The reversal of 1983620 is 263891.

It can be written as a sum of positive squares in 2 ways, for example, as 760384 + 1223236 = 872^2 + 1106^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49571 + ... + 49610.

It is an arithmetic number, because the mean of its divisors is an integer number (347137).

2^1983620 is an apocalyptic number.

1983620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1983620 is an abundant number, since it is smaller than the sum of its proper divisors (2182024).

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

1983620 is a wasteful number, since it uses less digits than its factorization.

1983620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99190 (or 99188 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1983620 is about 1408.4104515375. The cubic root of 1983620 is about 125.6472032404.

The spelling of 1983620 in words is "one million, nine hundred eighty-three thousand, six hundred twenty".