28517274 has 24 divisors (see below), whose sum is σ = 62135892. Its totient is φ = 9452160.

The previous prime is 28517273. The next prime is 28517287. The reversal of 28517274 is 47271582.

It can be written as a sum of positive squares in 2 ways, for example, as 28037025 + 480249 = 5295^2 + 693^2 .

It is not an unprimeable number, because it can be changed into a prime (28517273) 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 11 ways as a sum of consecutive naturals, for example, 1119 + ... + 7634.

Almost surely, 2^28517274 is an apocalyptic number.

28517274 is an abundant number, since it is smaller than the sum of its proper divisors (33618618).

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

28517274 is a wasteful number, since it uses less digits than its factorization.

28517274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8942 (or 8939 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 28517274 is about 5340.1567392727. The cubic root of 28517274 is about 305.5174375272.

The spelling of 28517274 in words is "twenty-eight million, five hundred seventeen thousand, two hundred seventy-four".