860420 has 24 divisors (see below), whose sum is σ = 1971648. Its totient is φ = 312800.

The previous prime is 860417. The next prime is 860423. The reversal of 860420 is 24068.

It is an interprime number because it is at equal distance from previous prime (860417) and next prime (860423).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 860392 and 860401.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 860420.

It is not an unprimeable number, because it can be changed into a prime (860423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1736 + ... + 2175.

It is an arithmetic number, because the mean of its divisors is an integer number (82152).

2⁸⁶⁰⁴²⁰ is an apocalyptic number.

It is an amenable number.

860420 is an abundant number, since it is smaller than the sum of its proper divisors (1111228).

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

860420 is a wasteful number, since it uses less digits than its factorization.

860420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3931 (or 3929 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 860420 is about 927.5882707322. The cubic root of 860420 is about 95.1123324944.

Adding to 860420 its reverse (24068), we get a palindrome (884488).

The spelling of 860420 in words is "eight hundred sixty thousand, four hundred twenty".