240340220 has 24 divisors (see below), whose sum is σ = 534404304. Its totient is φ = 90480896.

The previous prime is 240340211. The next prime is 240340223. The reversal of 240340220 is 22043042.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240340223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353102 + ... + 353781.

It is an arithmetic number, because the mean of its divisors is an integer number (22266846).

Almost surely, 2^240340220 is an apocalyptic number.

240340220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240340220 is an abundant number, since it is smaller than the sum of its proper divisors (294064084).

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

240340220 is a wasteful number, since it uses less digits than its factorization.

240340220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706909 (or 706907 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 240340220 is about 15502.9100494069. The cubic root of 240340220 is about 621.7400132760.

Adding to 240340220 its reverse (22043042), we get a palindrome (262383262).

The spelling of 240340220 in words is "two hundred forty million, three hundred forty thousand, two hundred twenty".