28106275 has 6 divisors (see below), whose sum is σ = 34851812. Its totient is φ = 22485000.

The previous prime is 28106257. The next prime is 28106293. The reversal of 28106275 is 57260182.

It is an interprime number because it is at equal distance from previous prime (28106257) and next prime (28106293).

It is not a de Polignac number, because 28106275 - 2¹⁷ = 27975203 is a prime.

It is a Duffinian 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, 562101 + ... + 562150.

Almost surely, 2^28106275 is an apocalyptic number.

28106275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28106275 is a deficient number, since it is larger than the sum of its proper divisors (6745537).

28106275 is a wasteful number, since it uses less digits than its factorization.

28106275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124261 (or 1124256 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 28106275 is about 5301.5351550282. The cubic root of 28106275 is about 304.0425948799.

The spelling of 28106275 in words is "twenty-eight million, one hundred six thousand, two hundred seventy-five".