162398 has 4 divisors (see below), whose sum is σ = 243600. Its totient is φ = 81198.

The previous prime is 162391. The next prime is 162413. The reversal of 162398 is 893261.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×162398² = 52746220808, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 162398.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162391) by changing a digit.

162398 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40598 + ... + 40601.

It is an arithmetic number, because the mean of its divisors is an integer number (60900).

2¹⁶²³⁹⁸ is an apocalyptic number.

162398 is a deficient number, since it is larger than the sum of its proper divisors (81202).

162398 is an equidigital number, since it uses as much as digits as its factorization.

162398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81201.

The product of its digits is 2592, while the sum is 29.

The square root of 162398 is about 402.9863521262. The cubic root of 162398 is about 54.5582241147.

The spelling of 162398 in words is "one hundred sixty-two thousand, three hundred ninety-eight".