1980022 has 8 divisors (see below), whose sum is σ = 3240072. Its totient is φ = 900000.

The previous prime is 1980019. The next prime is 1980023. The reversal of 1980022 is 2200891.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 90001 = 1980022 / (1 + 9 + 8 + 0 + 0 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 1979975 and 1980002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1980023) 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 3 ways as a sum of consecutive naturals, for example, 44979 + ... + 45022.

It is an arithmetic number, because the mean of its divisors is an integer number (405009).

2^1980022 is an apocalyptic number.

1980022 is a deficient number, since it is larger than the sum of its proper divisors (1260050).

1980022 is a wasteful number, since it uses less digits than its factorization.

1980022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90014.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1980022 is about 1407.1325452849. The cubic root of 1980022 is about 125.5711886394.

It can be divided in two parts, 19800 and 22, that multiplied together give a square (435600 = 660²).

The spelling of 1980022 in words is "one million, nine hundred eighty thousand, twenty-two".