29228147729 has 4 divisors (see below), whose sum is σ = 31885252080. Its totient is φ = 26571043380.

The previous prime is 29228147723. The next prime is 29228147747. The reversal of 29228147729 is 92774182292.

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 29228147729 - 2¹⁶ = 29228082193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29228147723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1328552159 + ... + 1328552180.

It is an arithmetic number, because the mean of its divisors is an integer number (7971313020).

Almost surely, 2^29228147729 is an apocalyptic number.

It is an amenable number.

29228147729 is a deficient number, since it is larger than the sum of its proper divisors (2657104351).

29228147729 is a wasteful number, since it uses less digits than its factorization.

29228147729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2657104350.

The product of its digits is 2032128, while the sum is 53.

The spelling of 29228147729 in words is "twenty-nine billion, two hundred twenty-eight million, one hundred forty-seven thousand, seven hundred twenty-nine".