28847028 has 48 divisors (see below), whose sum is σ = 81454464. Its totient is φ = 7756800.

The previous prime is 28847003. The next prime is 28847029. The reversal of 28847028 is 82074882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28847029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8673 + ... + 11528.

It is an arithmetic number, because the mean of its divisors is an integer number (1696968).

Almost surely, 2^28847028 is an apocalyptic number.

28847028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28847028 is an abundant number, since it is smaller than the sum of its proper divisors (52607436).

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

28847028 is a wasteful number, since it uses less digits than its factorization.

28847028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20232 (or 20230 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 39.

The square root of 28847028 is about 5370.9429339735. The cubic root of 28847028 is about 306.6905248189.

The spelling of 28847028 in words is "twenty-eight million, eight hundred forty-seven thousand, twenty-eight".