423440352 has 192 divisors, whose sum is σ = 1323786240. Its totient is φ = 131217408.

The previous prime is 423440341. The next prime is 423440383. The reversal of 423440352 is 253044324.

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

It is a nialpdrome in base 12.

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, 1865263 + ... + 1865489.

It is an arithmetic number, because the mean of its divisors is an integer number (6894720).

Almost surely, 2^423440352 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 423440352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (661893120).

423440352 is an abundant number, since it is smaller than the sum of its proper divisors (900345888).

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

423440352 is a wasteful number, since it uses less digits than its factorization.

423440352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 423440352 is about 20577.6663399910. Note that the first 3 decimals coincide. The cubic root of 423440352 is about 750.9264710639.

Adding to 423440352 its reverse (253044324), we get a palindrome (676484676).

The spelling of 423440352 in words is "four hundred twenty-three million, four hundred forty thousand, three hundred fifty-two".