28303356 has 24 divisors (see below), whose sum is σ = 66127824. Its totient is φ = 9422080.

The previous prime is 28303343. The next prime is 28303357. The reversal of 28303356 is 65330382.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28303357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15466 + ... + 17198.

It is an arithmetic number, because the mean of its divisors is an integer number (2755326).

Almost surely, 2^28303356 is an apocalyptic number.

It is an amenable number.

28303356 is an abundant number, since it is smaller than the sum of its proper divisors (37824468).

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

28303356 is a wasteful number, since it uses less digits than its factorization.

28303356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101 (or 3099 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 28303356 is about 5320.0898488653. The cubic root of 28303356 is about 304.7515884699.

The spelling of 28303356 in words is "twenty-eight million, three hundred three thousand, three hundred fifty-six".