28354005 has 24 divisors (see below), whose sum is σ = 49271040. Its totient is φ = 15084000.

The previous prime is 28353989. The next prime is 28354021. The reversal of 28354005 is 50045382.

It is an interprime number because it is at equal distance from previous prime (28353989) and next prime (28354021).

It is not a de Polignac number, because 28354005 - 2⁴ = 28353989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28354005.

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 23 ways as a sum of consecutive naturals, for example, 33376 + ... + 34214.

It is an arithmetic number, because the mean of its divisors is an integer number (2052960).

Almost surely, 2^28354005 is an apocalyptic number.

It is an amenable number.

28354005 is a deficient number, since it is larger than the sum of its proper divisors (20917035).

28354005 is a wasteful number, since it uses less digits than its factorization.

28354005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601 (or 1598 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 28354005 is about 5324.8478851513. The cubic root of 28354005 is about 304.9332649836.

Adding to 28354005 its reverse (50045382), we get a palindrome (78399387).

The spelling of 28354005 in words is "twenty-eight million, three hundred fifty-four thousand, five".