28173396 has 48 divisors (see below), whose sum is σ = 67935168. Its totient is φ = 9081600.

The previous prime is 28173373. The next prime is 28173407. The reversal of 28173396 is 69337182.

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 15 ways as a sum of consecutive naturals, for example, 84951 + ... + 85281.

It is an arithmetic number, because the mean of its divisors is an integer number (1415316).

Almost surely, 2^28173396 is an apocalyptic number.

It is an amenable number.

28173396 is an abundant number, since it is smaller than the sum of its proper divisors (39761772).

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

28173396 is a wasteful number, since it uses less digits than its factorization.

28173396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552 (or 550 counting only the distinct ones).

The product of its digits is 54432, while the sum is 39.

The square root of 28173396 is about 5307.8617163600. The cubic root of 28173396 is about 304.2844319699.

The spelling of 28173396 in words is "twenty-eight million, one hundred seventy-three thousand, three hundred ninety-six".