4155433728 has 72 divisors (see below), whose sum is σ = 11106278400. Its totient is φ = 1379288064.

The previous prime is 4155433727. The next prime is 4155433801. The reversal of 4155433728 is 8273345514.

It is a self number, because there is not a number n which added to its sum of digits gives 4155433728.

It is not an unprimeable number, because it can be changed into a prime (4155433727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172233 + ... + 194871.

Almost surely, 2^4155433728 is an apocalyptic number.

4155433728 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 4155433728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5553139200).

4155433728 is an abundant number, since it is smaller than the sum of its proper divisors (6950844672).

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

4155433728 is a wasteful number, since it uses less digits than its factorization.

4155433728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22897 (or 22883 counting only the distinct ones).

The product of its digits is 403200, while the sum is 42.

The square root of 4155433728 is about 64462.6537461808. The cubic root of 4155433728 is about 1607.7016351940.

The spelling of 4155433728 in words is "four billion, one hundred fifty-five million, four hundred thirty-three thousand, seven hundred twenty-eight".