28829969 has 8 divisors (see below), whose sum is σ = 34011648. Its totient is φ = 23914080.

The previous prime is 28829953. The next prime is 28829989. The reversal of 28829969 is 96992882.

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 28829969 - 2⁴ = 28829953 is a prime.

It is a super-2 number, since 2×28829969² = 1662334225081922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28829969.

It is not an unprimeable number, because it can be changed into a prime (28829989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66212 + ... + 66645.

It is an arithmetic number, because the mean of its divisors is an integer number (4251456).

Almost surely, 2^28829969 is an apocalyptic number.

It is an amenable number.

28829969 is a deficient number, since it is larger than the sum of its proper divisors (5181679).

28829969 is a wasteful number, since it uses less digits than its factorization.

28829969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132895.

The product of its digits is 1119744, while the sum is 53.

The square root of 28829969 is about 5369.3546167114. The cubic root of 28829969 is about 306.6300579856.

The spelling of 28829969 in words is "twenty-eight million, eight hundred twenty-nine thousand, nine hundred sixty-nine".