240531520 has 28 divisors (see below), whose sum is σ = 572766444. Its totient is φ = 96212480.

The previous prime is 240531509. The next prime is 240531527. The reversal of 240531520 is 25135042.

It can be written as a sum of positive squares in 2 ways, for example, as 143233024 + 97298496 = 11968^2 + 9864^2 .

It is a super-2 number, since 2×240531520² = 115710824227020800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 240531491 and 240531500.

It is not an unprimeable number, because it can be changed into a prime (240531527) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 375511 + ... + 376150.

Almost surely, 2^240531520 is an apocalyptic number.

240531520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240531520 is an abundant number, since it is smaller than the sum of its proper divisors (332234924).

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

240531520 is an equidigital number, since it uses as much as digits as its factorization.

240531520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751678 (or 751668 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 240531520 is about 15509.0786315629. The cubic root of 240531520 is about 621.9049285530.

Adding to 240531520 its reverse (25135042), we get a palindrome (265666562).

The spelling of 240531520 in words is "two hundred forty million, five hundred thirty-one thousand, five hundred twenty".