28009202 has 16 divisors (see below), whose sum is σ = 45689280. Its totient is φ = 12800592.

The previous prime is 28009199. The next prime is 28009231. The reversal of 28009202 is 20290082.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2552 + ... + 7907.

It is an arithmetic number, because the mean of its divisors is an integer number (2855580).

Almost surely, 2^28009202 is an apocalyptic number.

28009202 is a deficient number, since it is larger than the sum of its proper divisors (17680078).

28009202 is a wasteful number, since it uses less digits than its factorization.

28009202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10577.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 28009202 is about 5292.3720579717. The cubic root of 28009202 is about 303.6921586533.

Adding to 28009202 its reverse (20290082), we get a palindrome (48299284).

The spelling of 28009202 in words is "twenty-eight million, nine thousand, two hundred two".