29428289 has 6 divisors (see below), whose sum is σ = 32346930. Its totient is φ = 26752880.

The previous prime is 29428279. The next prime is 29428327. The reversal of 29428289 is 98282492.

It can be written as a sum of positive squares in only one way, i.e., 22165264 + 7263025 = 4708^2 + 2695^2 .

It is not a de Polignac number, because 29428289 - 2¹² = 29424193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (29428219) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 121484 + ... + 121725.

It is an arithmetic number, because the mean of its divisors is an integer number (5391155).

Almost surely, 2^29428289 is an apocalyptic number.

It is an amenable number.

29428289 is a deficient number, since it is larger than the sum of its proper divisors (2918641).

29428289 is a wasteful number, since it uses less digits than its factorization.

29428289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243231 (or 243220 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 29428289 is about 5424.7846961884. The cubic root of 29428289 is about 308.7367566317.

The spelling of 29428289 in words is "twenty-nine million, four hundred twenty-eight thousand, two hundred eighty-nine".