1980420 has 48 divisors (see below), whose sum is σ = 5974080. Its totient is φ = 487296.

The previous prime is 1980413. The next prime is 1980431. The reversal of 1980420 is 240891.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490 + ... + 2049.

It is an arithmetic number, because the mean of its divisors is an integer number (124460).

2^1980420 is an apocalyptic number.

1980420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1980420 is an abundant number, since it is smaller than the sum of its proper divisors (3993660).

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

1980420 is a wasteful number, since it uses less digits than its factorization.

1980420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564 (or 2562 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1980420 is about 1407.2739605350. The cubic root of 1980420 is about 125.5796016747.

The spelling of 1980420 in words is "one million, nine hundred eighty thousand, four hundred twenty".