28240175 has 12 divisors (see below), whose sum is σ = 36861480. Its totient is φ = 21402720.

The previous prime is 28240153. The next prime is 28240183. The reversal of 28240175 is 57104282.

It is not a de Polignac number, because 28240175 - 2²⁰ = 27191599 is a prime.

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, 29252 + ... + 30201.

It is an arithmetic number, because the mean of its divisors is an integer number (3071790).

Almost surely, 2^28240175 is an apocalyptic number.

28240175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28240175 is a deficient number, since it is larger than the sum of its proper divisors (8621305).

28240175 is a wasteful number, since it uses less digits than its factorization.

28240175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59482 (or 59477 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 28240175 is about 5314.1485677388. The cubic root of 28240175 is about 304.5246559576.

The spelling of 28240175 in words is "twenty-eight million, two hundred forty thousand, one hundred seventy-five".