240630 has 32 divisors (see below), whose sum is σ = 622944. Its totient is φ = 59136.

The previous prime is 240623. The next prime is 240631. The reversal of 240630 is 36042.

240630 = 130² + 131² + ... + 142².

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82 + ... + 698.

It is an arithmetic number, because the mean of its divisors is an integer number (19467).

2²⁴⁰⁶³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 240630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311472).

240630 is an abundant number, since it is smaller than the sum of its proper divisors (382314).

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

240630 is a wasteful number, since it uses less digits than its factorization.

240630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 240630 is about 490.5405182042. The cubic root of 240630 is about 62.1989791777.

Adding to 240630 its reverse (36042), we get a palindrome (276672).

The spelling of 240630 in words is "two hundred forty thousand, six hundred thirty".