424444240 has 40 divisors (see below), whose sum is σ = 1076547168. Its totient is φ = 154343040.

The previous prime is 424444127. The next prime is 424444247. The reversal of 424444240 is 42444424.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 424444199 and 424444208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424444247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240282 + ... + 242041.

Almost surely, 2^424444240 is an apocalyptic number.

424444240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

424444240 is an abundant number, since it is smaller than the sum of its proper divisors (652102928).

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

424444240 is a wasteful number, since it uses less digits than its factorization.

424444240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482347 (or 482341 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

The square root of 424444240 is about 20602.0445587325. The cubic root of 424444240 is about 751.5194322812.

Adding to 424444240 its reverse (42444424), we get a palindrome (466888664).

It can be divided in two parts, 4244 and 44240, that added together give a palindrome (48484).

The spelling of 424444240 in words is "four hundred twenty-four million, four hundred forty-four thousand, two hundred forty".