1980730 has 8 divisors (see below), whose sum is σ = 3565332. Its totient is φ = 792288.

The previous prime is 1980707. The next prime is 1980743. The reversal of 1980730 is 370891.

It can be written as a sum of positive squares in 2 ways, for example, as 1968409 + 12321 = 1403^2 + 111^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99027 + ... + 99046.

2^1980730 is an apocalyptic number.

1980730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1980730 is a deficient number, since it is larger than the sum of its proper divisors (1584602).

1980730 is a wasteful number, since it uses less digits than its factorization.

1980730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198080.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1980730 is about 1407.3840982475. The cubic root of 1980730 is about 125.5861537605.

The spelling of 1980730 in words is "one million, nine hundred eighty thousand, seven hundred thirty".