423500332220 has 96 divisors (see below), whose sum is σ = 1027369405440. Its totient is φ = 143640645120.

The previous prime is 423500332201. The next prime is 423500332231. The reversal of 423500332220 is 22233005324.

It is a self number, because there is not a number n which added to its sum of digits gives 423500332220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5429537 + ... + 5506983.

It is an arithmetic number, because the mean of its divisors is an integer number (10701764640).

Almost surely, 2^423500332220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423500332220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513684702720).

423500332220 is an abundant number, since it is smaller than the sum of its proper divisors (603869073220).

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

423500332220 is a wasteful number, since it uses less digits than its factorization.

423500332220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77883 (or 77881 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 26.

Adding to 423500332220 its reverse (22233005324), we get a palindrome (445733337544).

The spelling of 423500332220 in words is "four hundred twenty-three billion, five hundred million, three hundred thirty-two thousand, two hundred twenty".