28354513 has 4 divisors (see below), whose sum is σ = 30932208. Its totient is φ = 25776820.

The previous prime is 28354507. The next prime is 28354519. The reversal of 28354513 is 31545382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (28354507) and next prime (28354519).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28354513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28354519) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1288831 + ... + 1288852.

It is an arithmetic number, because the mean of its divisors is an integer number (7733052).

Almost surely, 2^28354513 is an apocalyptic number.

It is an amenable number.

28354513 is a deficient number, since it is larger than the sum of its proper divisors (2577695).

28354513 is a wasteful number, since it uses less digits than its factorization.

28354513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2577694.

The product of its digits is 14400, while the sum is 31.

The square root of 28354513 is about 5324.8955858308. The cubic root of 28354513 is about 304.9350860687.

Adding to 28354513 its reverse (31545382), we get a palindrome (59899895).

The spelling of 28354513 in words is "twenty-eight million, three hundred fifty-four thousand, five hundred thirteen".