20173528 has 16 divisors (see below), whose sum is σ = 38630880. Its totient is φ = 9871968.

The previous prime is 20173513. The next prime is 20173537. The reversal of 20173528 is 82537102.

It is a junction number, because it is equal to n+sod(n) for n = 20173496 and 20173505.

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 3 ways as a sum of consecutive naturals, for example, 26451 + ... + 27202.

It is an arithmetic number, because the mean of its divisors is an integer number (2414430).

Almost surely, 2^20173528 is an apocalyptic number.

It is an amenable number.

20173528 is a deficient number, since it is larger than the sum of its proper divisors (18457352).

20173528 is a wasteful number, since it uses less digits than its factorization.

20173528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53706 (or 53702 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 20173528 is about 4491.4950740260. The cubic root of 20173528 is about 272.2245478506.

The spelling of 20173528 in words is "twenty million, one hundred seventy-three thousand, five hundred twenty-eight".