998532 has 18 divisors (see below), whose sum is σ = 2524158. Its totient is φ = 332832.

The previous prime is 998527. The next prime is 998537. The reversal of 998532 is 235899.

998532 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (998527) and next prime (998537).

It can be written as a sum of positive squares in only one way, i.e., 968256 + 30276 = 984^2 + 174^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 27737 = 998532 / (9 + 9 + 8 + 5 + 3 + 2).

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (998537) by changing a digit.

998532 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13833 + ... + 13904.

It is an arithmetic number, because the mean of its divisors is an integer number (140231).

2⁹⁹⁸⁵³² is an apocalyptic number.

It is an amenable number.

998532 is an abundant number, since it is smaller than the sum of its proper divisors (1525626).

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

998532 is a wasteful number, since it uses less digits than its factorization.

998532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27747 (or 27742 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 998532 is about 999.2657304241. The cubic root of 998532 is about 99.9510427024.

The spelling of 998532 in words is "nine hundred ninety-eight thousand, five hundred thirty-two".