61728016 has 20 divisors (see below), whose sum is σ = 136683712. Its totient is φ = 26454816.

The previous prime is 61728011. The next prime is 61728019. The reversal of 61728016 is 61082716.

61728016 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (61728011) by changing a digit.

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, 275460 + ... + 275683.

Almost surely, 2^61728016 is an apocalyptic number.

It is an amenable number.

61728016 is an abundant number, since it is smaller than the sum of its proper divisors (74955696).

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

61728016 is a wasteful number, since it uses less digits than its factorization.

61728016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551158 (or 551152 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 61728016 is about 7856.7178898061. The cubic root of 61728016 is about 395.2095581946.

The spelling of 61728016 in words is "sixty-one million, seven hundred twenty-eight thousand, sixteen".