28117650 has 48 divisors (see below), whose sum is σ = 76075488. Its totient is φ = 6816000.

The previous prime is 28117627. The next prime is 28117699. The reversal of 28117650 is 5671182.

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

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6871 + ... + 10170.

It is an arithmetic number, because the mean of its divisors is an integer number (1584906).

Almost surely, 2^28117650 is an apocalyptic number.

28117650 is an abundant number, since it is smaller than the sum of its proper divisors (47957838).

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

28117650 is a wasteful number, since it uses less digits than its factorization.

28117650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17067 (or 17062 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 28117650 is about 5302.6078489739. The cubic root of 28117650 is about 304.0836061020.

The spelling of 28117650 in words is "twenty-eight million, one hundred seventeen thousand, six hundred fifty".