424522440 has 96 divisors (see below), whose sum is σ = 1394036280. Its totient is φ = 112029696.

The previous prime is 424522429. The next prime is 424522447. The reversal of 424522440 is 44225424.

It can be written as a sum of positive squares in 4 ways, for example, as 217680516 + 206841924 = 14754^2 + 14382^2 .

It is not an unprimeable number, because it can be changed into a prime (424522447) 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, 28842 + ... + 40998.

Almost surely, 2^424522440 is an apocalyptic number.

424522440 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 424522440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (697018140).

424522440 is an abundant number, since it is smaller than the sum of its proper divisors (969513840).

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

424522440 is a wasteful number, since it uses less digits than its factorization.

424522440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12271 (or 12264 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 424522440 is about 20603.9423412123. The cubic root of 424522440 is about 751.5655829926.

Adding to 424522440 its reverse (44225424), we get a palindrome (468747864).

The spelling of 424522440 in words is "four hundred twenty-four million, five hundred twenty-two thousand, four hundred forty".