28190241 has 16 divisors (see below), whose sum is σ = 42736320. Its totient is φ = 18355680.

The previous prime is 28190231. The next prime is 28190257. The reversal of 28190241 is 14209182.

It is not a de Polignac number, because 28190241 - 2⁵ = 28190209 is a prime.

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 not an unprimeable number, because it can be changed into a prime (28190231) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10980 + ... + 13301.

It is an arithmetic number, because the mean of its divisors is an integer number (2671020).

Almost surely, 2^28190241 is an apocalyptic number.

It is an amenable number.

28190241 is a deficient number, since it is larger than the sum of its proper divisors (14546079).

28190241 is a wasteful number, since it uses less digits than its factorization.

28190241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24333 (or 24327 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 28190241 is about 5309.4482764219. The cubic root of 28190241 is about 304.3450642302.

The spelling of 28190241 in words is "twenty-eight million, one hundred ninety thousand, two hundred forty-one".