128061829 has 4 divisors (see below), whose sum is σ = 146356384. Its totient is φ = 109767276.

The previous prime is 128061827. The next prime is 128061851. The reversal of 128061829 is 928160821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128061829 - 2¹ = 128061827 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128061827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9147267 + ... + 9147280.

It is an arithmetic number, because the mean of its divisors is an integer number (36589096).

Almost surely, 2^128061829 is an apocalyptic number.

It is an amenable number.

128061829 is a deficient number, since it is larger than the sum of its proper divisors (18294555).

128061829 is an equidigital number, since it uses as much as digits as its factorization.

128061829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18294554.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 128061829 is about 11316.4406506640. The cubic root of 128061829 is about 504.0495523737.

The spelling of 128061829 in words is "one hundred twenty-eight million, sixty-one thousand, eight hundred twenty-nine".