424424040 has 128 divisors (see below), whose sum is σ = 1384853760. Its totient is φ = 103624704.

The previous prime is 424424027. The next prime is 424424041. The reversal of 424424040 is 40424424.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 424424040.

It is not an unprimeable number, because it can be changed into a prime (424424041) 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, 72669 + ... + 78291.

It is an arithmetic number, because the mean of its divisors is an integer number (10819170).

Almost surely, 2^424424040 is an apocalyptic number.

424424040 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 424424040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (692426880).

424424040 is an abundant number, since it is smaller than the sum of its proper divisors (960429720).

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

424424040 is a wasteful number, since it uses less digits than its factorization.

424424040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5691 (or 5687 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 424424040 is about 20601.5543102942. The cubic root of 424424040 is about 751.5075100765.

Adding to 424424040 its reverse (40424424), we get a palindrome (464848464).

The spelling of 424424040 in words is "four hundred twenty-four million, four hundred twenty-four thousand, forty".