420304344 has 16 divisors (see below), whose sum is σ = 1050760920. Its totient is φ = 140101440.

The previous prime is 420304331. The next prime is 420304361. The reversal of 420304344 is 443403024.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 17512681 = 420304344 / (4 + 2 + 0 + 3 + 0 + 4 + 3 + 4 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8756317 + ... + 8756364.

Almost surely, 2^420304344 is an apocalyptic number.

It is an amenable number.

420304344 is an abundant number, since it is smaller than the sum of its proper divisors (630456576).

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

420304344 is a wasteful number, since it uses less digits than its factorization.

420304344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17512690 (or 17512686 counting only the distinct ones).

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

The square root of 420304344 is about 20501.3254205673. The cubic root of 420304344 is about 749.0680834105.

Adding to 420304344 its reverse (443403024), we get a palindrome (863707368).

The spelling of 420304344 in words is "four hundred twenty million, three hundred four thousand, three hundred forty-four".