28285800 has 48 divisors (see below), whose sum is σ = 87687840. Its totient is φ = 7542720.

The previous prime is 28285799. The next prime is 28285801. The reversal of 28285800 is 858282.

It is an interprime number because it is at equal distance from previous prime (28285799) and next prime (28285801).

It is not an unprimeable number, because it can be changed into a prime (28285801) 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, 22972 + ... + 24171.

It is an arithmetic number, because the mean of its divisors is an integer number (1826830).

Almost surely, 2^28285800 is an apocalyptic number.

28285800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28285800 is an abundant number, since it is smaller than the sum of its proper divisors (59402040).

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

28285800 is a wasteful number, since it uses less digits than its factorization.

28285800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47162 (or 47153 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 28285800 is about 5318.4396207910. The cubic root of 28285800 is about 304.6885650193.

The spelling of 28285800 in words is "twenty-eight million, two hundred eighty-five thousand, eight hundred".