28890302 has 12 divisors (see below), whose sum is σ = 50410800. Its totient is φ = 12381516.

The previous prime is 28890263. The next prime is 28890307. The reversal of 28890302 is 20309882.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28890307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147302 + ... + 147497.

It is an arithmetic number, because the mean of its divisors is an integer number (4200900).

Almost surely, 2^28890302 is an apocalyptic number.

28890302 is a deficient number, since it is larger than the sum of its proper divisors (21520498).

28890302 is a wasteful number, since it uses less digits than its factorization.

28890302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294815 (or 294808 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 28890302 is about 5374.9699534044. The cubic root of 28890302 is about 306.8438057150.

It can be divided in two parts, 28890 and 302, that added together give a palindrome (29192).

The spelling of 28890302 in words is "twenty-eight million, eight hundred ninety thousand, three hundred two".