28173534 has 8 divisors (see below), whose sum is σ = 56347080. Its totient is φ = 9391176.

The previous prime is 28173527. The next prime is 28173577. The reversal of 28173534 is 43537182.

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

28173534 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 28173495 and 28173504.

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, 2347789 + ... + 2347800.

It is an arithmetic number, because the mean of its divisors is an integer number (7043385).

Almost surely, 2^28173534 is an apocalyptic number.

28173534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28173534 is a wasteful number, since it uses less digits than its factorization.

28173534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4695594.

The product of its digits is 20160, while the sum is 33.

The square root of 28173534 is about 5307.8747159292. The cubic root of 28173534 is about 304.2849287882.

The spelling of 28173534 in words is "twenty-eight million, one hundred seventy-three thousand, five hundred thirty-four".