1980912 has 20 divisors (see below), whose sum is σ = 5117480. Its totient is φ = 660288.

The previous prime is 1980911. The next prime is 1980919. The reversal of 1980912 is 2190891.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1980912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20587 + ... + 20682.

It is an arithmetic number, because the mean of its divisors is an integer number (255874).

2^1980912 is an apocalyptic number.

1980912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1980912 is an abundant number, since it is smaller than the sum of its proper divisors (3136568).

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

1980912 is a wasteful number, since it uses less digits than its factorization.

1980912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41280 (or 41274 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 1980912 is about 1407.4487557279. The cubic root of 1980912 is about 125.5900001505.

The spelling of 1980912 in words is "one million, nine hundred eighty thousand, nine hundred twelve".