340243440 has 160 divisors (see below), whose sum is σ = 1130552640. Its totient is φ = 84344832.

The previous prime is 340243433. The next prime is 340243451. The reversal of 340243440 is 44342043.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 340243440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 362652 + ... + 363588.

It is an arithmetic number, because the mean of its divisors is an integer number (7065954).

Almost surely, 2^340243440 is an apocalyptic number.

340243440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340243440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565276320).

340243440 is an abundant number, since it is smaller than the sum of its proper divisors (790309200).

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

340243440 is a wasteful number, since it uses less digits than its factorization.

340243440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059 (or 1053 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 340243440 is about 18445.6889272263. The cubic root of 340243440 is about 698.1197431149.

Adding to 340243440 its reverse (44342043), we get a palindrome (384585483).

The spelling of 340243440 in words is "three hundred forty million, two hundred forty-three thousand, four hundred forty".