161728846 has 16 divisors (see below), whose sum is σ = 248881248. Its totient is φ = 78774400.

The previous prime is 161728843. The next prime is 161728867. The reversal of 161728846 is 648827161.

161728846 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161728843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83586 + ... + 85498.

It is an arithmetic number, because the mean of its divisors is an integer number (15555078).

Almost surely, 2^161728846 is an apocalyptic number.

161728846 is a deficient number, since it is larger than the sum of its proper divisors (87152402).

161728846 is a wasteful number, since it uses less digits than its factorization.

161728846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2987.

The product of its digits is 129024, while the sum is 43.

The square root of 161728846 is about 12717.2656652285. The cubic root of 161728846 is about 544.8318601483.

The spelling of 161728846 in words is "one hundred sixty-one million, seven hundred twenty-eight thousand, eight hundred forty-six".