240340020 has 48 divisors (see below), whose sum is σ = 673843968. Its totient is φ = 64005760.

The previous prime is 240340019. The next prime is 240340021. The reversal of 240340020 is 20043042.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (240340019) and next prime (240340021).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240340021) 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, 52462 + ... + 56858.

It is an arithmetic number, because the mean of its divisors is an integer number (14038416).

Almost surely, 2^240340020 is an apocalyptic number.

240340020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240340020 is an abundant number, since it is smaller than the sum of its proper divisors (433503948).

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

240340020 is a wasteful number, since it uses less digits than its factorization.

240340020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5320 (or 5318 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 240340020 is about 15502.9035990036. The cubic root of 240340020 is about 621.7398408149.

Adding to 240340020 its reverse (20043042), we get a palindrome (260383062).

The spelling of 240340020 in words is "two hundred forty million, three hundred forty thousand, twenty".