28209002 has 8 divisors (see below), whose sum is σ = 42452256. Its totient is φ = 14058252.

The previous prime is 28208987. The next prime is 28209007. The reversal of 28209002 is 20090282.

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

It is not an unprimeable number, because it can be changed into a prime (28209007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22358 + ... + 23585.

It is an arithmetic number, because the mean of its divisors is an integer number (5306532).

Almost surely, 2^28209002 is an apocalyptic number.

28209002 is a deficient number, since it is larger than the sum of its proper divisors (14243254).

28209002 is a wasteful number, since it uses less digits than its factorization.

28209002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46252.

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

The square root of 28209002 is about 5311.2147386450. The cubic root of 28209002 is about 304.4125645584.

Adding to 28209002 its reverse (20090282), we get a palindrome (48299284).

The spelling of 28209002 in words is "twenty-eight million, two hundred nine thousand, two".