1998472 has 32 divisors (see below), whose sum is σ = 4331520. Its totient is φ = 846720.

The previous prime is 1998457. The next prime is 1998473. The reversal of 1998472 is 2748991.

It is not an unprimeable number, because it can be changed into a prime (1998473) 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, 6972 + ... + 7252.

It is an arithmetic number, because the mean of its divisors is an integer number (135360).

2^1998472 is an apocalyptic number.

It is an amenable number.

1998472 is an abundant number, since it is smaller than the sum of its proper divisors (2333048).

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

1998472 is a wasteful number, since it uses less digits than its factorization.

1998472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 417 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The square root of 1998472 is about 1413.6732295690. The cubic root of 1998472 is about 125.9600108254.

The spelling of 1998472 in words is "one million, nine hundred ninety-eight thousand, four hundred seventy-two".