28170038 has 8 divisors (see below), whose sum is σ = 45505488. Its totient is φ = 13001544.

The previous prime is 28170007. The next prime is 28170053. The reversal of 28170038 is 83007182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541706 + ... + 541757.

It is an arithmetic number, because the mean of its divisors is an integer number (5688186).

Almost surely, 2^28170038 is an apocalyptic number.

28170038 is a deficient number, since it is larger than the sum of its proper divisors (17335450).

28170038 is a wasteful number, since it uses less digits than its factorization.

28170038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083478.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 28170038 is about 5307.5453836967. The cubic root of 28170038 is about 304.2723422225.

The spelling of 28170038 in words is "twenty-eight million, one hundred seventy thousand, thirty-eight".