28126775 has 12 divisors (see below), whose sum is σ = 35470200. Its totient is φ = 22118880.

The previous prime is 28126757. The next prime is 28126793. The reversal of 28126775 is 57762182.

It is an interprime number because it is at equal distance from previous prime (28126757) and next prime (28126793).

It is not a de Polignac number, because 28126775 - 2¹⁶ = 28061239 is a prime.

It is a super-2 number, since 2×28126775² = 1582230943801250, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8060 + ... + 11009.

It is an arithmetic number, because the mean of its divisors is an integer number (2955850).

Almost surely, 2^28126775 is an apocalyptic number.

28126775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28126775 is a deficient number, since it is larger than the sum of its proper divisors (7343425).

28126775 is a wasteful number, since it uses less digits than its factorization.

28126775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19138 (or 19133 counting only the distinct ones).

The product of its digits is 47040, while the sum is 38.

The square root of 28126775 is about 5303.4682048637. The cubic root of 28126775 is about 304.1164972195.

The spelling of 28126775 in words is "twenty-eight million, one hundred twenty-six thousand, seven hundred seventy-five".