328428629 has 2 divisors, whose sum is σ = 328428630. Its totient is φ = 328428628.

The previous prime is 328428577. The next prime is 328428643. The reversal of 328428629 is 926824823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212284900 + 116143729 = 14570^2 + 10777^2 .

It is a cyclic number.

It is not a de Polignac number, because 328428629 - 2¹² = 328424533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 328428629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328428649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164214314 + 164214315.

It is an arithmetic number, because the mean of its divisors is an integer number (164214315).

Almost surely, 2^328428629 is an apocalyptic number.

It is an amenable number.

328428629 is a deficient number, since it is larger than the sum of its proper divisors (1).

328428629 is an equidigital number, since it uses as much as digits as its factorization.

328428629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 44.

The square root of 328428629 is about 18122.5999514418. The cubic root of 328428629 is about 689.9437250191.

It can be divided in two parts, 3284 and 28629, that added together give a palindrome (31913).

The spelling of 328428629 in words is "three hundred twenty-eight million, four hundred twenty-eight thousand, six hundred twenty-nine".