1988392 has 16 divisors (see below), whose sum is σ = 4260960. Its totient is φ = 852144.

The previous prime is 1988353. The next prime is 1988411. The reversal of 1988392 is 2938891.

It is a plaindrome in base 11.

It is an unprimeable number.

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, 17698 + ... + 17809.

It is an arithmetic number, because the mean of its divisors is an integer number (266310).

2^1988392 is an apocalyptic number.

It is an amenable number.

1988392 is an abundant number, since it is smaller than the sum of its proper divisors (2272568).

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

1988392 is a wasteful number, since it uses less digits than its factorization.

1988392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35520 (or 35516 counting only the distinct ones).

The product of its digits is 31104, while the sum is 40.

The square root of 1988392 is about 1410.1035422975. The cubic root of 1988392 is about 125.7478791569.

The spelling of 1988392 in words is "one million, nine hundred eighty-eight thousand, three hundred ninety-two".