1980250 has 24 divisors (see below), whose sum is σ = 3749148. Its totient is φ = 783200.

The previous prime is 1980247. The next prime is 1980263. The reversal of 1980250 is 520891.

It can be written as a sum of positive squares in 6 ways, for example, as 45369 + 1934881 = 213^2 + 1391^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 22206 + ... + 22294.

2^1980250 is an apocalyptic number.

1980250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1980250 is a deficient number, since it is larger than the sum of its proper divisors (1768898).

1980250 is an frugal number, since it uses more digits than its factorization.

1980250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1980250 is about 1407.2135587749. The cubic root of 1980250 is about 125.5760083051.

The spelling of 1980250 in words is "one million, nine hundred eighty thousand, two hundred fifty".