309162 has 32 divisors (see below), whose sum is σ = 749952. Its totient is φ = 82944.

The previous prime is 309157. The next prime is 309167. The reversal of 309162 is 261903.

It is an interprime number because it is at equal distance from previous prime (309157) and next prime (309167).

It is a super-2 number, since 2×309162² = 191162284488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 309162.

It is not an unprimeable number, because it can be changed into a prime (309167) by changing a digit.

309162 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 in 15 ways as a sum of consecutive naturals, for example, 498 + ... + 930.

It is an arithmetic number, because the mean of its divisors is an integer number (23436).

2³⁰⁹¹⁶² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 309162, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374976).

309162 is an abundant number, since it is smaller than the sum of its proper divisors (440790).

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

309162 is a wasteful number, since it uses less digits than its factorization.

309162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 309162 is about 556.0233808034. The cubic root of 309162 is about 67.6179556192.

The spelling of 309162 in words is "three hundred nine thousand, one hundred sixty-two".