316420 has 24 divisors (see below), whose sum is σ = 716184. Its totient is φ = 116736.

The previous prime is 316403. The next prime is 316423. The reversal of 316420 is 24613.

316420 = T₂₀ + T₂₁ + ... + T₁₂₃.

It can be written as a sum of positive squares in 4 ways, for example, as 576 + 315844 = 24^2 + 562^2 .

It is a junction number, because it is equal to n+sod(n) for n = 316394 and 316403.

It is not an unprimeable number, because it can be changed into a prime (316423) by changing a digit.

316420 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 7 ways as a sum of consecutive naturals, for example, 349 + ... + 868.

It is an arithmetic number, because the mean of its divisors is an integer number (29841).

2³¹⁶⁴²⁰ is an apocalyptic number.

It is an amenable number.

316420 is an abundant number, since it is smaller than the sum of its proper divisors (399764).

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

316420 is a wasteful number, since it uses less digits than its factorization.

316420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239 (or 1237 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 316420 is about 562.5122220894. The cubic root of 316420 is about 68.1430092948.

The spelling of 316420 in words is "three hundred sixteen thousand, four hundred twenty".