28317534 has 16 divisors (see below), whose sum is σ = 64725888. Its totient is φ = 8090712.

The previous prime is 28317533. The next prime is 28317551. The reversal of 28317534 is 43571382.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28317495 and 28317504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28317533) 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, 337072 + ... + 337155.

It is an arithmetic number, because the mean of its divisors is an integer number (4045368).

Almost surely, 2^28317534 is an apocalyptic number.

28317534 is an abundant number, since it is smaller than the sum of its proper divisors (36408354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28317534 is a wasteful number, since it uses less digits than its factorization.

28317534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674239.

The product of its digits is 20160, while the sum is 33.

The square root of 28317534 is about 5321.4221783279. The cubic root of 28317534 is about 304.8024663794.

The spelling of 28317534 in words is "twenty-eight million, three hundred seventeen thousand, five hundred thirty-four".