1980216 has 48 divisors (see below), whose sum is σ = 6130800. Its totient is φ = 565632.

The previous prime is 1980191. The next prime is 1980221. The reversal of 1980216 is 6120891.

It is a self number, because there is not a number n which added to its sum of digits gives 1980216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1461 + ... + 2468.

It is an arithmetic number, because the mean of its divisors is an integer number (127725).

2^1980216 is an apocalyptic number.

It is an amenable number.

1980216 is an abundant number, since it is smaller than the sum of its proper divisors (4150584).

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

1980216 is a wasteful number, since it uses less digits than its factorization.

1980216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3948 (or 3941 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1980216 is about 1407.2014781118. The cubic root of 1980216 is about 125.5752896065.

The spelling of 1980216 in words is "one million, nine hundred eighty thousand, two hundred sixteen".