128334629 has 4 divisors (see below), whose sum is σ = 128702700. Its totient is φ = 127966560.

The previous prime is 128334553. The next prime is 128334653. The reversal of 128334629 is 926433821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47748100 + 80586529 = 6910^2 + 8977^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128334629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128334592 and 128334601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128334659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183512 + ... + 184209.

It is an arithmetic number, because the mean of its divisors is an integer number (32175675).

Almost surely, 2^128334629 is an apocalyptic number.

It is an amenable number.

128334629 is a deficient number, since it is larger than the sum of its proper divisors (368071).

128334629 is an equidigital number, since it uses as much as digits as its factorization.

128334629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368070.

The product of its digits is 62208, while the sum is 38.

The square root of 128334629 is about 11328.4874983380. The cubic root of 128334629 is about 504.4072108471.

The spelling of 128334629 in words is "one hundred twenty-eight million, three hundred thirty-four thousand, six hundred twenty-nine".