240520212 has 48 divisors (see below), whose sum is σ = 624456000. Its totient is φ = 80059680.

The previous prime is 240520187. The next prime is 240520213. The reversal of 240520212 is 212025042.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240520213) 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 15 ways as a sum of consecutive naturals, for example, 113539 + ... + 115637.

It is an arithmetic number, because the mean of its divisors is an integer number (13009500).

Almost surely, 2^240520212 is an apocalyptic number.

It is an amenable number.

240520212 is an abundant number, since it is smaller than the sum of its proper divisors (383935788).

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

240520212 is a wasteful number, since it uses less digits than its factorization.

240520212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3173 (or 3165 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 240520212 is about 15508.7140666143. The cubic root of 240520212 is about 621.8951826215.

Adding to 240520212 its reverse (212025042), we get a palindrome (452545254).

The spelling of 240520212 in words is "two hundred forty million, five hundred twenty thousand, two hundred twelve".