28605575 has 6 divisors (see below), whose sum is σ = 35470944. Its totient is φ = 22884440.

The previous prime is 28605569. The next prime is 28605581. The reversal of 28605575 is 57550682.

It is an interprime number because it is at equal distance from previous prime (28605569) and next prime (28605581).

It is not a de Polignac number, because 28605575 - 2¹⁴ = 28589191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 572087 + ... + 572136.

It is an arithmetic number, because the mean of its divisors is an integer number (5911824).

Almost surely, 2^28605575 is an apocalyptic number.

28605575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28605575 is a deficient number, since it is larger than the sum of its proper divisors (6865369).

28605575 is a wasteful number, since it uses less digits than its factorization.

28605575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1144233 (or 1144228 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 38.

The square root of 28605575 is about 5348.4179903968. The cubic root of 28605575 is about 305.8324477516.

The spelling of 28605575 in words is "twenty-eight million, six hundred five thousand, five hundred seventy-five".