423640630 has 32 divisors (see below), whose sum is σ = 874036800. Its totient is φ = 144823680.

The previous prime is 423640627. The next prime is 423640649. The reversal of 423640630 is 36046324.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 15760 + ... + 33100.

It is an arithmetic number, because the mean of its divisors is an integer number (27313650).

Almost surely, 2^423640630 is an apocalyptic number.

423640630 is an abundant number, since it is smaller than the sum of its proper divisors (450396170).

423640630 is a wasteful number, since it uses less digits than its factorization.

423640630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17704.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 423640630 is about 20582.5321571472. The cubic root of 423640630 is about 751.0448429875.

Adding to 423640630 its reverse (36046324), we get a palindrome (459686954).

The spelling of 423640630 in words is "four hundred twenty-three million, six hundred forty thousand, six hundred thirty".