3252221428 has 6 divisors (see below), whose sum is σ = 5691387506. Its totient is φ = 1626110712.

The previous prime is 3252221411. The next prime is 3252221429. The reversal of 3252221428 is 8241222523.

It can be written as a sum of positive squares in only one way, i.e., 2291345424 + 960876004 = 47868^2 + 30998^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3252221428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3252221429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406527675 + ... + 406527682.

Almost surely, 2^3252221428 is an apocalyptic number.

It is an amenable number.

3252221428 is a deficient number, since it is larger than the sum of its proper divisors (2439166078).

3252221428 is a wasteful number, since it uses less digits than its factorization.

3252221428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813055361 (or 813055359 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

The square root of 3252221428 is about 57028.2511392380. The cubic root of 3252221428 is about 1481.5854430696.

The spelling of 3252221428 in words is "three billion, two hundred fifty-two million, two hundred twenty-one thousand, four hundred twenty-eight".