423024640 has 96 divisors (see below), whose sum is σ = 1027026000. Its totient is φ = 167215104.

The previous prime is 423024629. The next prime is 423024643. The reversal of 423024640 is 46420324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423024643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1115971 + ... + 1116349.

Almost surely, 2^423024640 is an apocalyptic number.

423024640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423024640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (513513000).

423024640 is an abundant number, since it is smaller than the sum of its proper divisors (604001360).

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

423024640 is a wasteful number, since it uses less digits than its factorization.

423024640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515 (or 495 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 423024640 is about 20567.5628113785. The cubic root of 423024640 is about 750.6806502483.

Adding to 423024640 its reverse (46420324), we get a palindrome (469444964).

The spelling of 423024640 in words is "four hundred twenty-three million, twenty-four thousand, six hundred forty".