161028726 has 16 divisors (see below), whose sum is σ = 341002224. Its totient is φ = 50518784.

The previous prime is 161028719. The next prime is 161028731. The reversal of 161028726 is 627820161.

161028726 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

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, 789255 + ... + 789458.

It is an arithmetic number, because the mean of its divisors is an integer number (21312639).

Almost surely, 2^161028726 is an apocalyptic number.

161028726 is an abundant number, since it is smaller than the sum of its proper divisors (179973498).

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

161028726 is a wasteful number, since it uses less digits than its factorization.

161028726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578735.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 161028726 is about 12689.7094529386. The cubic root of 161028726 is about 544.0445352633.

Adding to 161028726 its reverse (627820161), we get a palindrome (788848887).

The spelling of 161028726 in words is "one hundred sixty-one million, twenty-eight thousand, seven hundred twenty-six".