1998252 has 36 divisors (see below), whose sum is σ = 5162976. Its totient is φ = 651360.

The previous prime is 1998251. The next prime is 1998257. The reversal of 1998252 is 2528991.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1998252² = 7986022111008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1998251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1102 + ... + 2282.

It is an arithmetic number, because the mean of its divisors is an integer number (143416).

2^1998252 is an apocalyptic number.

1998252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1998252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2581488).

1998252 is an abundant number, since it is smaller than the sum of its proper divisors (3164724).

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

1998252 is a wasteful number, since it uses less digits than its factorization.

1998252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238 (or 1233 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1998252 is about 1413.5954159518. The cubic root of 1998252 is about 125.9553885908.

The spelling of 1998252 in words is "one million, nine hundred ninety-eight thousand, two hundred fifty-two".