1980790 has 16 divisors (see below), whose sum is σ = 4074912. Its totient is φ = 679104.

The previous prime is 1980773. The next prime is 1980791. The reversal of 1980790 is 970891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14079 + ... + 14218.

It is an arithmetic number, because the mean of its divisors is an integer number (254682).

2^1980790 is an apocalyptic number.

1980790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1980790 is an abundant number, since it is smaller than the sum of its proper divisors (2094122).

1980790 is a wasteful number, since it uses less digits than its factorization.

1980790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28311.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 1980790 is about 1407.4054142286. The cubic root of 1980790 is about 125.5874218272.

The spelling of 1980790 in words is "one million, nine hundred eighty thousand, seven hundred ninety".