860240 has 20 divisors (see below), whose sum is σ = 2000244. Its totient is φ = 344064.

The previous prime is 860239. The next prime is 860257. The reversal of 860240 is 42068.

It can be written as a sum of positive squares in 2 ways, for example, as 602176 + 258064 = 776^2 + 508^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5297 + ... + 5456.

2⁸⁶⁰²⁴⁰ is an apocalyptic number.

860240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

860240 is an abundant number, since it is smaller than the sum of its proper divisors (1140004).

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

860240 is a wasteful number, since it uses less digits than its factorization.

860240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10766 (or 10760 counting only the distinct ones).

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

The square root of 860240 is about 927.4912398508. The cubic root of 860240 is about 95.1056995268.

The spelling of 860240 in words is "eight hundred sixty thousand, two hundred forty".