340503240 has 256 divisors, whose sum is σ = 1304709120. Its totient is φ = 69027840.

The previous prime is 340503227. The next prime is 340503257. The reversal of 340503240 is 42305043.

It is a happy number.

340503240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 396892 + ... + 397748.

It is an arithmetic number, because the mean of its divisors is an integer number (5096520).

Almost surely, 2^340503240 is an apocalyptic number.

340503240 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 340503240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652354560).

340503240 is an abundant number, since it is smaller than the sum of its proper divisors (964205880).

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

340503240 is a wasteful number, since it uses less digits than its factorization.

340503240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 340503240 is about 18452.7298793431. The cubic root of 340503240 is about 698.2973858888.

Adding to 340503240 its reverse (42305043), we get a palindrome (382808283).

The spelling of 340503240 in words is "three hundred forty million, five hundred three thousand, two hundred forty".