29120128 has 16 divisors (see below), whose sum is σ = 58013010. Its totient is φ = 14560000.

The previous prime is 29120123. The next prime is 29120131. The reversal of 29120128 is 82102192.

It can be written as a sum of positive squares in only one way, i.e., 28815424 + 304704 = 5368^2 + 552^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (29120123) 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 as a sum of consecutive naturals, namely, 113623 + ... + 113878.

Almost surely, 2^29120128 is an apocalyptic number.

It is an amenable number.

29120128 is a deficient number, since it is larger than the sum of its proper divisors (28892882).

29120128 is an equidigital number, since it uses as much as digits as its factorization.

29120128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227515 (or 227503 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 29120128 is about 5396.3068852689. The cubic root of 29120128 is about 307.6553180149.

The spelling of 29120128 in words is "twenty-nine million, one hundred twenty thousand, one hundred twenty-eight".