28162750 has 144 divisors (see below), whose sum is σ = 70958160. Its totient is φ = 8316000.

The previous prime is 28162711. The next prime is 28162751. The reversal of 28162750 is 5726182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28162751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1482241 + ... + 1482259.

It is an arithmetic number, because the mean of its divisors is an integer number (492765).

Almost surely, 2^28162750 is an apocalyptic number.

28162750 is an abundant number, since it is smaller than the sum of its proper divisors (42795410).

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

28162750 is a wasteful number, since it uses less digits than its factorization.

28162750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 28162750 is about 5306.8587695547. The cubic root of 28162750 is about 304.2461000606.

The spelling of 28162750 in words is "twenty-eight million, one hundred sixty-two thousand, seven hundred fifty".