240721152 has 72 divisors (see below), whose sum is σ = 732209856. Its totient is φ = 68775936.

The previous prime is 240721133. The next prime is 240721157. The reversal of 240721152 is 251127042.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240721157) 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 7 ways as a sum of consecutive naturals, for example, 17013 + ... + 27764.

Almost surely, 2^240721152 is an apocalyptic number.

It is an amenable number.

240721152 is an abundant number, since it is smaller than the sum of its proper divisors (491488704).

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

240721152 is an equidigital number, since it uses as much as digits as its factorization.

240721152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44803 (or 44789 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 240721152 is about 15515.1910075255. The cubic root of 240721152 is about 622.0683196083.

Adding to 240721152 its reverse (251127042), we get a palindrome (491848194).

The spelling of 240721152 in words is "two hundred forty million, seven hundred twenty-one thousand, one hundred fifty-two".