28569914 has 4 divisors (see below), whose sum is σ = 42854874. Its totient is φ = 14284956.

The previous prime is 28569913. The next prime is 28569917. The reversal of 28569914 is 41996582.

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

It can be written as a sum of positive squares in only one way, i.e., 16200625 + 12369289 = 4025^2 + 3517^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28569913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7142477 + ... + 7142480.

Almost surely, 2^28569914 is an apocalyptic number.

28569914 is a deficient number, since it is larger than the sum of its proper divisors (14284960).

28569914 is a wasteful number, since it uses less digits than its factorization.

28569914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14284959.

The product of its digits is 155520, while the sum is 44.

The square root of 28569914 is about 5345.0831611865. The cubic root of 28569914 is about 305.7053067292.

The spelling of 28569914 in words is "twenty-eight million, five hundred sixty-nine thousand, nine hundred fourteen".