240870 has 64 divisors (see below), whose sum is σ = 700416. Its totient is φ = 51840.

The previous prime is 240869. The next prime is 240881. The reversal of 240870 is 78042.

240870 = 50² + 51² + ... + 94².

It is a happy number.

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

It is a congruent number.

It is an unprimeable 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 31 ways as a sum of consecutive naturals, for example, 6492 + ... + 6528.

It is an arithmetic number, because the mean of its divisors is an integer number (10944).

2²⁴⁰⁸⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 240870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (350208).

240870 is an abundant number, since it is smaller than the sum of its proper divisors (459546).

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

240870 is a wasteful number, since it uses less digits than its factorization.

240870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 240870 is about 490.7850853480. The cubic root of 240870 is about 62.2196510181.

The spelling of 240870 in words is "two hundred forty thousand, eight hundred seventy".