423004572 has 72 divisors (see below), whose sum is σ = 1127513520. Its totient is φ = 137142720.

The previous prime is 423004541. The next prime is 423004573. The reversal of 423004572 is 275400324.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423004573) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 146422 + ... + 149282.

It is an arithmetic number, because the mean of its divisors is an integer number (15659910).

Almost surely, 2^423004572 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 423004572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (563756760).

423004572 is an abundant number, since it is smaller than the sum of its proper divisors (704508948).

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

423004572 is a wasteful number, since it uses less digits than its factorization.

423004572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948 (or 2903 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 423004572 is about 20567.0749500263. The cubic root of 423004572 is about 750.6687794681.

Adding to 423004572 its reverse (275400324), we get a palindrome (698404896).

The spelling of 423004572 in words is "four hundred twenty-three million, four thousand, five hundred seventy-two".