28669338 has 24 divisors (see below), whose sum is σ = 62244000. Its totient is φ = 9536904.

The previous prime is 28669331. The next prime is 28669351. The reversal of 28669338 is 83396682.

It is a junction number, because it is equal to n+sod(n) for n = 28669293 and 28669302.

It is not an unprimeable number, because it can be changed into a prime (28669331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9453 + ... + 12111.

It is an arithmetic number, because the mean of its divisors is an integer number (2593500).

Almost surely, 2^28669338 is an apocalyptic number.

28669338 is an abundant number, since it is smaller than the sum of its proper divisors (33574662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28669338 is a wasteful number, since it uses less digits than its factorization.

28669338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3266 (or 3263 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 28669338 is about 5354.3755938485. The cubic root of 28669338 is about 306.0595168098.

The spelling of 28669338 in words is "twenty-eight million, six hundred sixty-nine thousand, three hundred thirty-eight".