52728945 has 16 divisors (see below), whose sum is σ = 85436160. Its totient is φ = 27765504.

The previous prime is 52728937. The next prime is 52728983. The reversal of 52728945 is 54982725.

It is not a de Polignac number, because 52728945 - 2³ = 52728937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52728897 and 52728906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21064 + ... + 23433.

It is an arithmetic number, because the mean of its divisors is an integer number (5339760).

Almost surely, 2^52728945 is an apocalyptic number.

It is an amenable number.

52728945 is a deficient number, since it is larger than the sum of its proper divisors (32707215).

52728945 is a wasteful number, since it uses less digits than its factorization.

52728945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44584.

The product of its digits is 201600, while the sum is 42.

The square root of 52728945 is about 7261.4698925218. The cubic root of 52728945 is about 374.9871284471.

The spelling of 52728945 in words is "fifty-two million, seven hundred twenty-eight thousand, nine hundred forty-five".