340443420 has 48 divisors (see below), whose sum is σ = 955641120. Its totient is φ = 90556416.

The previous prime is 340443407. The next prime is 340443421. The reversal of 340443420 is 24344043.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340443421) 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, 17604 + ... + 31476.

It is an arithmetic number, because the mean of its divisors is an integer number (19909190).

Almost surely, 2^340443420 is an apocalyptic number.

340443420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

340443420 is an abundant number, since it is smaller than the sum of its proper divisors (615197700).

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

340443420 is a wasteful number, since it uses less digits than its factorization.

340443420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14294 (or 14292 counting only the distinct ones).

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

The square root of 340443420 is about 18451.1089097647. The cubic root of 340443420 is about 698.2564909319.

Adding to 340443420 its reverse (24344043), we get a palindrome (364787463).

The spelling of 340443420 in words is "three hundred forty million, four hundred forty-three thousand, four hundred twenty".