1989252 has 48 divisors (see below), whose sum is σ = 5234880. Its totient is φ = 653184.

The previous prime is 1989241. The next prime is 1989259. The reversal of 1989252 is 2529891.

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 (1989259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12123 + ... + 12285.

It is an arithmetic number, because the mean of its divisors is an integer number (109060).

2^1989252 is an apocalyptic number.

1989252 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 1989252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2617440).

1989252 is an abundant number, since it is smaller than the sum of its proper divisors (3245628).

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

1989252 is a wasteful number, since it uses less digits than its factorization.

1989252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 281 counting only the distinct ones).

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

The square root of 1989252 is about 1410.4084514778. The cubic root of 1989252 is about 125.7660056278.

The spelling of 1989252 in words is "one million, nine hundred eighty-nine thousand, two hundred fifty-two".