156728066 has 16 divisors (see below), whose sum is σ = 271550880. Its totient is φ = 67049280.

The previous prime is 156728059. The next prime is 156728087. The reversal of 156728066 is 660827651.

156728066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209156 + ... + 209903.

It is an arithmetic number, because the mean of its divisors is an integer number (16971930).

Almost surely, 2^156728066 is an apocalyptic number.

156728066 is a deficient number, since it is larger than the sum of its proper divisors (114822814).

156728066 is a wasteful number, since it uses less digits than its factorization.

156728066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419089.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 156728066 is about 12519.1080353194. The cubic root of 156728066 is about 539.1574262812.

The spelling of 156728066 in words is "one hundred fifty-six million, seven hundred twenty-eight thousand, sixty-six".