424631540 has 12 divisors (see below), whose sum is σ = 891726276. Its totient is φ = 169852608.

The previous prime is 424631527. The next prime is 424631561. The reversal of 424631540 is 45136424.

It can be written as a sum of positive squares in 2 ways, for example, as 300398224 + 124233316 = 17332^2 + 11146^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10615769 + ... + 10615808.

It is an arithmetic number, because the mean of its divisors is an integer number (74310523).

Almost surely, 2^424631540 is an apocalyptic number.

It is an amenable number.

424631540 is an abundant number, since it is smaller than the sum of its proper divisors (467094736).

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

424631540 is a wasteful number, since it uses less digits than its factorization.

424631540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21231586 (or 21231584 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 424631540 is about 20606.5897227076. The cubic root of 424631540 is about 751.6299602584.

Adding to 424631540 its reverse (45136424), we get a palindrome (469767964).

The spelling of 424631540 in words is "four hundred twenty-four million, six hundred thirty-one thousand, five hundred forty".