28969175 has 12 divisors (see below), whose sum is σ = 36147240. Its totient is φ = 23029920.

The previous prime is 28969153. The next prime is 28969183. The reversal of 28969175 is 57196982.

It is a de Polignac number, because none of the positive numbers 2^k-28969175 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 521 + ... + 7629.

It is an arithmetic number, because the mean of its divisors is an integer number (3012270).

Almost surely, 2^28969175 is an apocalyptic number.

28969175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28969175 is a deficient number, since it is larger than the sum of its proper divisors (7178065).

28969175 is a wasteful number, since it uses less digits than its factorization.

28969175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7282 (or 7277 counting only the distinct ones).

The product of its digits is 272160, while the sum is 47.

The square root of 28969175 is about 5382.3020167954. The cubic root of 28969175 is about 307.1227886138.

The spelling of 28969175 in words is "twenty-eight million, nine hundred sixty-nine thousand, one hundred seventy-five".