3225770728 has 8 divisors (see below), whose sum is σ = 6048320130. Its totient is φ = 1612885360.

The previous prime is 3225770719. The next prime is 3225770729. The reversal of 3225770728 is 8270775223.

It can be written as a sum of positive squares in only one way, i.e., 2277007524 + 948763204 = 47718^2 + 30802^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (3225770729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201610663 + ... + 201610678.

Almost surely, 2^3225770728 is an apocalyptic number.

It is an amenable number.

3225770728 is a deficient number, since it is larger than the sum of its proper divisors (2822549402).

3225770728 is a wasteful number, since it uses less digits than its factorization.

3225770728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403221347 (or 403221343 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 43.

The square root of 3225770728 is about 56795.8689342808. The cubic root of 3225770728 is about 1477.5578680251.

The spelling of 3225770728 in words is "three billion, two hundred twenty-five million, seven hundred seventy thousand, seven hundred twenty-eight".