424506640 has 80 divisors (see below), whose sum is σ = 1036630080. Its totient is φ = 161441280.

The previous prime is 424506637. The next prime is 424506647. The reversal of 424506640 is 46605424.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (424506647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154075 + ... + 156805.

It is an arithmetic number, because the mean of its divisors is an integer number (12957876).

Almost surely, 2^424506640 is an apocalyptic number.

424506640 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 424506640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518315040).

424506640 is an abundant number, since it is smaller than the sum of its proper divisors (612123440).

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

424506640 is a wasteful number, since it uses less digits than its factorization.

424506640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2840 (or 2834 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 424506640 is about 20603.5589158766. The cubic root of 424506640 is about 751.5562588812.

The spelling of 424506640 in words is "four hundred twenty-four million, five hundred six thousand, six hundred forty".