1988022 has 8 divisors (see below), whose sum is σ = 3976056. Its totient is φ = 662672.

The previous prime is 1988011. The next prime is 1988023. The reversal of 1988022 is 2208891.

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

1988022 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988023) 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, 165663 + ... + 165674.

It is an arithmetic number, because the mean of its divisors is an integer number (497007).

2^1988022 is an apocalyptic number.

1988022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1988022 is a wasteful number, since it uses less digits than its factorization.

1988022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331342.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1988022 is about 1409.9723401542. The cubic root of 1988022 is about 125.7400789510.

The spelling of 1988022 in words is "one million, nine hundred eighty-eight thousand, twenty-two".