1980226 has 8 divisors (see below), whose sum is σ = 2979900. Its totient is φ = 986928.

The previous prime is 1980221. The next prime is 1980227. The reversal of 1980226 is 6220891.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1918225 + 62001 = 1385^2 + 249^2 .

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

It is a super-2 number, since 2×1980226² = 7842590022152, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 1980194 and 1980203.

It is not an unprimeable number, because it can be changed into a prime (1980221) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 721 + ... + 2116.

2^1980226 is an apocalyptic number.

1980226 is a deficient number, since it is larger than the sum of its proper divisors (999674).

1980226 is a wasteful number, since it uses less digits than its factorization.

1980226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3188.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1980226 is about 1407.2050312588. The cubic root of 1980226 is about 125.5755009893.

The spelling of 1980226 in words is "one million, nine hundred eighty thousand, two hundred twenty-six".