28233900 has 72 divisors (see below), whose sum is σ = 90775440. Its totient is φ = 7528320.

The previous prime is 28233899. The next prime is 28233913. The reversal of 28233900 is 933282.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2529 + ... + 7928.

It is an arithmetic number, because the mean of its divisors is an integer number (1260770).

Almost surely, 2^28233900 is an apocalyptic number.

28233900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28233900 is an abundant number, since it is smaller than the sum of its proper divisors (62541540).

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

28233900 is a wasteful number, since it uses less digits than its factorization.

28233900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10480 (or 10467 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 28233900 is about 5313.5581299163. The cubic root of 28233900 is about 304.5020990416.

The spelling of 28233900 in words is "twenty-eight million, two hundred thirty-three thousand, nine hundred".