3575421728 has 48 divisors (see below), whose sum is σ = 7231835520. Its totient is φ = 1739020800.

The previous prime is 3575421727. The next prime is 3575421809. The reversal of 3575421728 is 8271245753.

It is not an unprimeable number, because it can be changed into a prime (3575421727) 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, 467213 + ... + 474803.

It is an arithmetic number, because the mean of its divisors is an integer number (150663240).

Almost surely, 2^3575421728 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 3575421728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3615917760).

3575421728 is an abundant number, since it is smaller than the sum of its proper divisors (3656413792).

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

3575421728 is a wasteful number, since it uses less digits than its factorization.

3575421728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8001 (or 7993 counting only the distinct ones).

The product of its digits is 470400, while the sum is 44.

The square root of 3575421728 is about 59794.8302782105. The cubic root of 3575421728 is about 1529.1230151501.

The spelling of 3575421728 in words is "three billion, five hundred seventy-five million, four hundred twenty-one thousand, seven hundred twenty-eight".