28190006 has 16 divisors (see below), whose sum is σ = 45967824. Its totient is φ = 12887904.

The previous prime is 28189981. The next prime is 28190017. The reversal of 28190006 is 60009182.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2285 + ... + 7848.

It is an arithmetic number, because the mean of its divisors is an integer number (2872989).

Almost surely, 2^28190006 is an apocalyptic number.

28190006 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28190006 is a deficient number, since it is larger than the sum of its proper divisors (17777818).

28190006 is a wasteful number, since it uses less digits than its factorization.

28190006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10255.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 28190006 is about 5309.4261460162. The cubic root of 28190006 is about 304.3442185322.

Adding to 28190006 its reverse (60009182), we get a palindrome (88199188).

The spelling of 28190006 in words is "twenty-eight million, one hundred ninety thousand, six".