424325520 has 160 divisors (see below), whose sum is σ = 1508951040. Its totient is φ = 109486080.

The previous prime is 424325519. The next prime is 424325521. The reversal of 424325520 is 25523424.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (424325519) and next prime (424325521).

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

It is not an unprimeable number, because it can be changed into a prime (424325521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63792 + ... + 70128.

It is an arithmetic number, because the mean of its divisors is an integer number (9430944).

Almost surely, 2^424325520 is an apocalyptic number.

424325520 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 424325520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (754475520).

424325520 is an abundant number, since it is smaller than the sum of its proper divisors (1084625520).

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

424325520 is a wasteful number, since it uses less digits than its factorization.

424325520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6390 (or 6378 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 424325520 is about 20599.1630897957. The cubic root of 424325520 is about 751.4493573468.

Adding to 424325520 its reverse (25523424), we get a palindrome (449848944).

The spelling of 424325520 in words is "four hundred twenty-four million, three hundred twenty-five thousand, five hundred twenty".