4451143928 has 256 divisors, whose sum is σ = 11280384000. Its totient is φ = 1629936000.

The previous prime is 4451143913. The next prime is 4451143933. The reversal of 4451143928 is 8293411544.

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, 62692133 + ... + 62692203.

It is an arithmetic number, because the mean of its divisors is an integer number (44064000).

Almost surely, 2^4451143928 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 4451143928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5640192000).

4451143928 is an abundant number, since it is smaller than the sum of its proper divisors (6829240072).

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

4451143928 is a wasteful number, since it uses less digits than its factorization.

4451143928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 189 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 4451143928 is about 66716.8938725418. The cubic root of 4451143928 is about 1644.9670855041.

The spelling of 4451143928 in words is "four billion, four hundred fifty-one million, one hundred forty-three thousand, nine hundred twenty-eight".