845320 has 32 divisors (see below), whose sum is σ = 2174400. Its totient is φ = 289728.

The previous prime is 845309. The next prime is 845333. The reversal of 845320 is 23548.

845320 = T₁₄₅ + T₁₄₆ + ... + T₂₀₀.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 845291 and 845300.

It is an unprimeable number.

845320 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, 1230 + ... + 1789.

It is an arithmetic number, because the mean of its divisors is an integer number (67950).

2⁸⁴⁵³²⁰ is an apocalyptic number.

It is an amenable number.

845320 is an abundant number, since it is smaller than the sum of its proper divisors (1329080).

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

845320 is a wasteful number, since it uses less digits than its factorization.

845320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037 (or 3033 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 845320 is about 919.4128561207. The cubic root of 845320 is about 94.5526520879.

Adding to 845320 its reverse (23548), we get a palindrome (868868).

It can be divided in two parts, 845 and 320, that multiplied together give a square (270400 = 520²).

The spelling of 845320 in words is "eight hundred forty-five thousand, three hundred twenty".