28173536 has 12 divisors (see below), whose sum is σ = 55466712. Its totient is φ = 14086752.

The previous prime is 28173527. The next prime is 28173577. The reversal of 28173536 is 63537182.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28173496 and 28173505.

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 as a sum of consecutive naturals, namely, 440180 + ... + 440243.

It is an arithmetic number, because the mean of its divisors is an integer number (4622226).

Almost surely, 2^28173536 is an apocalyptic number.

It is an amenable number.

28173536 is a deficient number, since it is larger than the sum of its proper divisors (27293176).

28173536 is an equidigital number, since it uses as much as digits as its factorization.

28173536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880433 (or 880425 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 28173536 is about 5307.8749043285. The cubic root of 28173536 is about 304.2849359885.

The spelling of 28173536 in words is "twenty-eight million, one hundred seventy-three thousand, five hundred thirty-six".