28967269 has 4 divisors (see below), whose sum is σ = 30671244. Its totient is φ = 27263296.

The previous prime is 28967261. The next prime is 28967273. The reversal of 28967269 is 96276982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24502500 + 4464769 = 4950^2 + 2113^2 .

It is a cyclic number.

It is not a de Polignac number, because 28967269 - 2³ = 28967261 is a prime.

It is a super-2 number, since 2×28967269² = 1678205346636722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28967261) 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 in 3 ways as a sum of consecutive naturals, for example, 851962 + ... + 851995.

It is an arithmetic number, because the mean of its divisors is an integer number (7667811).

Almost surely, 2^28967269 is an apocalyptic number.

It is an amenable number.

28967269 is a deficient number, since it is larger than the sum of its proper divisors (1703975).

28967269 is a wasteful number, since it uses less digits than its factorization.

28967269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703974.

The product of its digits is 653184, while the sum is 49.

The square root of 28967269 is about 5382.1249520984. The cubic root of 28967269 is about 307.1160528464.

The spelling of 28967269 in words is "twenty-eight million, nine hundred sixty-seven thousand, two hundred sixty-nine".