240730221 has 16 divisors (see below), whose sum is σ = 332354048. Its totient is φ = 154828800.

The previous prime is 240730201. The next prime is 240730223. The reversal of 240730221 is 122037042.

It is not a de Polignac number, because 240730221 - 2⁶ = 240730157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240730223) 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, 27501 + ... + 35181.

It is an arithmetic number, because the mean of its divisors is an integer number (20772128).

Almost surely, 2^240730221 is an apocalyptic number.

It is an amenable number.

240730221 is a deficient number, since it is larger than the sum of its proper divisors (91623827).

240730221 is a wasteful number, since it uses less digits than its factorization.

240730221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8052.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 240730221 is about 15515.4832667242. The cubic root of 240730221 is about 622.0761315056.

Adding to 240730221 its reverse (122037042), we get a palindrome (362767263).

The spelling of 240730221 in words is "two hundred forty million, seven hundred thirty thousand, two hundred twenty-one".