1980880 has 40 divisors (see below), whose sum is σ = 5026464. Its totient is φ = 720000.

The previous prime is 1980877. The next prime is 1980899. The reversal of 1980880 is 880891.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246 + ... + 2005.

2^1980880 is an apocalyptic number.

1980880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1980880 is an abundant number, since it is smaller than the sum of its proper divisors (3045584).

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

1980880 is a wasteful number, since it uses less digits than its factorization.

1980880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2275 (or 2269 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 1980880 is about 1407.4373875949. The cubic root of 1980880 is about 125.5893238792.

It can be divided in two parts, 1980 and 880, that multiplied together give a square (1742400 = 1320²).

The spelling of 1980880 in words is "one million, nine hundred eighty thousand, eight hundred eighty".