424432240 has 40 divisors (see below), whose sum is σ = 999311040. Its totient is φ = 167621376.

The previous prime is 424432219. The next prime is 424432243. The reversal of 424432240 is 42234424.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424432243) 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, 27259 + ... + 39898.

It is an arithmetic number, because the mean of its divisors is an integer number (24982776).

Almost surely, 2^424432240 is an apocalyptic number.

424432240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

424432240 is an abundant number, since it is smaller than the sum of its proper divisors (574878800).

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

424432240 is a wasteful number, since it uses less digits than its factorization.

424432240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67249 (or 67243 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 424432240 is about 20601.7533234431. The cubic root of 424432240 is about 751.5123498290.

Adding to 424432240 its reverse (42234424), we get a palindrome (466666664).

The spelling of 424432240 in words is "four hundred twenty-four million, four hundred thirty-two thousand, two hundred forty".