1988206 has 8 divisors (see below), whose sum is σ = 3253464. Its totient is φ = 903720.

The previous prime is 1988197. The next prime is 1988219. The reversal of 1988206 is 6028891.

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

It is an Ulam number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 45165 + ... + 45208.

It is an arithmetic number, because the mean of its divisors is an integer number (406683).

2^1988206 is an apocalyptic number.

1988206 is a deficient number, since it is larger than the sum of its proper divisors (1265258).

1988206 is a wasteful number, since it uses less digits than its factorization.

1988206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90386.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 1988206 is about 1410.0375881515. The cubic root of 1988206 is about 125.7439580933.

The spelling of 1988206 in words is "one million, nine hundred eighty-eight thousand, two hundred six".