28969429 has 8 divisors (see below), whose sum is σ = 29652480. Its totient is φ = 28291536.

The previous prime is 28969427. The next prime is 28969453. The reversal of 28969429 is 92496982.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28969429 - 2¹ = 28969427 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 (28969427) 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 7 ways as a sum of consecutive naturals, for example, 11524 + ... + 13810.

It is an arithmetic number, because the mean of its divisors is an integer number (3706560).

Almost surely, 2^28969429 is an apocalyptic number.

It is an amenable number.

28969429 is a deficient number, since it is larger than the sum of its proper divisors (683051).

28969429 is a wasteful number, since it uses less digits than its factorization.

28969429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579.

The product of its digits is 559872, while the sum is 49.

The square root of 28969429 is about 5382.3256125954. The cubic root of 28969429 is about 307.1236862226.

The spelling of 28969429 in words is "twenty-eight million, nine hundred sixty-nine thousand, four hundred twenty-nine".