1998572 has 12 divisors (see below), whose sum is σ = 3681720. Its totient is φ = 946656.

The previous prime is 1998569. The next prime is 1998587. The reversal of 1998572 is 2758991.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13073 + ... + 13224.

It is an arithmetic number, because the mean of its divisors is an integer number (306810).

2^1998572 is an apocalyptic number.

It is an amenable number.

1998572 is a deficient number, since it is larger than the sum of its proper divisors (1683148).

1998572 is a wasteful number, since it uses less digits than its factorization.

1998572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26320 (or 26318 counting only the distinct ones).

The product of its digits is 45360, while the sum is 41.

The square root of 1998572 is about 1413.7085979791. The cubic root of 1998572 is about 125.9621117290.

The spelling of 1998572 in words is "one million, nine hundred ninety-eight thousand, five hundred seventy-two".