4424621568 has 160 divisors (see below), whose sum is σ = 12456440832. Its totient is φ = 1393459200.

The previous prime is 4424621567. The next prime is 4424621581. The reversal of 4424621568 is 8651264244.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4424621567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2046408 + ... + 2048568.

Almost surely, 2^4424621568 is an apocalyptic number.

4424621568 is a gapful number since it is divisible by the number (48) 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 4424621568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6228220416).

4424621568 is an abundant number, since it is smaller than the sum of its proper divisors (8031819264).

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

4424621568 is a wasteful number, since it uses less digits than its factorization.

4424621568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256 (or 2240 counting only the distinct ones).

The product of its digits is 368640, while the sum is 42.

The square root of 4424621568 is about 66517.8289483353. The cubic root of 4424621568 is about 1641.6933689090.

The spelling of 4424621568 in words is "four billion, four hundred twenty-four million, six hundred twenty-one thousand, five hundred sixty-eight".