4434138720 has 384 divisors, whose sum is σ = 17670804480. Its totient is φ = 1027952640.

The previous prime is 4434138689. The next prime is 4434138733. The reversal of 4434138720 is 278314344.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1090932 + ... + 1094988.

It is an arithmetic number, because the mean of its divisors is an integer number (46017720).

Almost surely, 2^4434138720 is an apocalyptic number.

4434138720 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 4434138720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8835402240).

4434138720 is an abundant number, since it is smaller than the sum of its proper divisors (13236665760).

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

4434138720 is a wasteful number, since it uses less digits than its factorization.

4434138720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4115 (or 4101 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 4434138720 is about 66589.3288748280. The cubic root of 4434138720 is about 1642.8695942742.

The spelling of 4434138720 in words is "four billion, four hundred thirty-four million, one hundred thirty-eight thousand, seven hundred twenty".