444231424 has 72 divisors (see below), whose sum is σ = 1091414240. Its totient is φ = 175730688.

The previous prime is 444231413. The next prime is 444231427. The reversal of 444231424 is 424132444.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 444231392 and 444231401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444231427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13762 + ... + 32830.

Almost surely, 2^444231424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 444231424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (545707120).

444231424 is an abundant number, since it is smaller than the sum of its proper divisors (647182816).

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

444231424 is a wasteful number, since it uses less digits than its factorization.

444231424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19105 (or 19091 counting only the distinct ones).

The product of its digits is 12288, while the sum is 28.

The square root of 444231424 is about 21076.7982388218. The cubic root of 444231424 is about 763.0208851162.

Adding to 444231424 its reverse (424132444), we get a palindrome (868363868).

The spelling of 444231424 in words is "four hundred forty-four million, two hundred thirty-one thousand, four hundred twenty-four".