3281512628 has 6 divisors (see below), whose sum is σ = 5742647106. Its totient is φ = 1640756312.

The previous prime is 3281512627. The next prime is 3281512631. The reversal of 3281512628 is 8262151823.

It can be written as a sum of positive squares in only one way, i.e., 2832581284 + 448931344 = 53222^2 + 21188^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3281512591 and 3281512600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3281512627) 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 as a sum of consecutive naturals, namely, 410189075 + ... + 410189082.

It is an arithmetic number, because the mean of its divisors is an integer number (957107851).

Almost surely, 2^3281512628 is an apocalyptic number.

It is an amenable number.

3281512628 is a deficient number, since it is larger than the sum of its proper divisors (2461134478).

3281512628 is a wasteful number, since it uses less digits than its factorization.

3281512628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820378161 (or 820378159 counting only the distinct ones).

The product of its digits is 46080, while the sum is 38.

The square root of 3281512628 is about 57284.4885462025. The cubic root of 3281512628 is about 1486.0201326019.

The spelling of 3281512628 in words is "three billion, two hundred eighty-one million, five hundred twelve thousand, six hundred twenty-eight".