4405243520 has 64 divisors (see below), whose sum is σ = 10550665800. Its totient is φ = 1758855168.

The previous prime is 4405243519. The next prime is 4405243523. The reversal of 4405243520 is 253425044.

It can be written as a sum of positive squares in 4 ways, for example, as 1464133696 + 2941109824 = 38264^2 + 54232^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (4405243523) 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, 358112 + ... + 370208.

Almost surely, 2^4405243520 is an apocalyptic number.

4405243520 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 4405243520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5275332900).

4405243520 is an abundant number, since it is smaller than the sum of its proper divisors (6145422280).

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

4405243520 is a wasteful number, since it uses less digits than its factorization.

4405243520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12685 (or 12673 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 4405243520 is about 66372.0085578250. The cubic root of 4405243520 is about 1639.2932112043.

Adding to 4405243520 its reverse (253425044), we get a palindrome (4658668564).

The spelling of 4405243520 in words is "four billion, four hundred five million, two hundred forty-three thousand, five hundred twenty".