423022500 has 150 divisors (see below), whose sum is σ = 1382549630. Its totient is φ = 112752000.

The previous prime is 423022499. The next prime is 423022547. The reversal of 423022500 is 5220324.

It can be written as a sum of positive squares in 5 ways, for example, as 83283876 + 339738624 = 9126^2 + 18432^2 .

It is a tau number, because it is divible by the number of its divisors (150).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 49 ways as a sum of consecutive naturals, for example, 201456 + ... + 203544.

Almost surely, 2^423022500 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 423022500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (691274815).

423022500 is an abundant number, since it is smaller than the sum of its proper divisors (959527130).

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

423022500 is a wasteful number, since it uses less digits than its factorization.

423022500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125 (or 2099 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 423022500 is about 20567.5107876476. The cubic root of 423022500 is about 750.6793843966.

Adding to 423022500 its reverse (5220324), we get a palindrome (428242824).

The spelling of 423022500 in words is "four hundred twenty-three million, twenty-two thousand, five hundred".