1998372 has 24 divisors (see below), whose sum is σ = 4688992. Its totient is φ = 662400.

The previous prime is 1998371. The next prime is 1998379. The reversal of 1998372 is 2738991.

It is a self number, because there is not a number n which added to its sum of digits gives 1998372.

It is not an unprimeable number, because it can be changed into a prime (1998371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2547 + ... + 3237.

2^1998372 is an apocalyptic number.

1998372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1998372 is an abundant number, since it is smaller than the sum of its proper divisors (2690620).

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

1998372 is a wasteful number, since it uses less digits than its factorization.

1998372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939 (or 937 counting only the distinct ones).

The product of its digits is 27216, while the sum is 39.

The square root of 1998372 is about 1413.6378602740. The cubic root of 1998372 is about 125.9579098517.

The spelling of 1998372 in words is "one million, nine hundred ninety-eight thousand, three hundred seventy-two".