28617513 has 8 divisors (see below), whose sum is σ = 38640000. Its totient is φ = 18836688.

The previous prime is 28617503. The next prime is 28617517. The reversal of 28617513 is 31571682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28617513 - 2⁵ = 28617481 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28617517) 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 7 ways as a sum of consecutive naturals, for example, 60138 + ... + 60611.

It is an arithmetic number, because the mean of its divisors is an integer number (4830000).

Almost surely, 2^28617513 is an apocalyptic number.

It is an amenable number.

28617513 is a deficient number, since it is larger than the sum of its proper divisors (10022487).

28617513 is a wasteful number, since it uses less digits than its factorization.

28617513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120831.

The product of its digits is 10080, while the sum is 33.

The square root of 28617513 is about 5349.5339049304. The cubic root of 28617513 is about 305.8749863125.

The spelling of 28617513 in words is "twenty-eight million, six hundred seventeen thousand, five hundred thirteen".