28171030 has 16 divisors (see below), whose sum is σ = 51320304. Its totient is φ = 11132320.

The previous prime is 28171009. The next prime is 28171043. The reversal of 28171030 is 3017182.

It is a junction number, because it is equal to n+sod(n) for n = 28170992 and 28171010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16141 + ... + 17800.

It is an arithmetic number, because the mean of its divisors is an integer number (3207519).

Almost surely, 2^28171030 is an apocalyptic number.

28171030 is a deficient number, since it is larger than the sum of its proper divisors (23149274).

28171030 is a wasteful number, since it uses less digits than its factorization.

28171030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34031.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 28171030 is about 5307.6388347362. The cubic root of 28171030 is about 304.2759138023.

The spelling of 28171030 in words is "twenty-eight million, one hundred seventy-one thousand, thirty".