344221420 has 24 divisors (see below), whose sum is σ = 738247104. Its totient is φ = 134758656.

The previous prime is 344221417. The next prime is 344221421. The reversal of 344221420 is 24122443.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 344221391 and 344221400.

It is not an unprimeable number, because it can be changed into a prime (344221421) 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 7 ways as a sum of consecutive naturals, for example, 182157 + ... + 184036.

It is an arithmetic number, because the mean of its divisors is an integer number (30760296).

Almost surely, 2^344221420 is an apocalyptic number.

It is an amenable number.

344221420 is an abundant number, since it is smaller than the sum of its proper divisors (394025684).

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

344221420 is a wasteful number, since it uses less digits than its factorization.

344221420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366249 (or 366247 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 344221420 is about 18553.2051139419. The cubic root of 344221420 is about 700.8299136323.

Adding to 344221420 its reverse (24122443), we get a palindrome (368343863).

The spelling of 344221420 in words is "three hundred forty-four million, two hundred twenty-one thousand, four hundred twenty".