28281595 has 32 divisors (see below), whose sum is σ = 37558080. Its totient is φ = 20367360.

The previous prime is 28281581. The next prime is 28281599. The reversal of 28281595 is 59518282.

28281595 = T₁₁₅₄ + T₁₁₅₅ + ... + T₁₁₉₄.

It is not a de Polignac number, because 28281595 - 2²³ = 19892987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28281599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206367 + ... + 206503.

It is an arithmetic number, because the mean of its divisors is an integer number (1173690).

Almost surely, 2^28281595 is an apocalyptic number.

28281595 is a deficient number, since it is larger than the sum of its proper divisors (9276485).

28281595 is a wasteful number, since it uses less digits than its factorization.

28281595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255.

The product of its digits is 57600, while the sum is 40.

The square root of 28281595 is about 5318.0442833809. The cubic root of 28281595 is about 304.6734658186.

The spelling of 28281595 in words is "twenty-eight million, two hundred eighty-one thousand, five hundred ninety-five".