161297288 has 16 divisors (see below), whose sum is σ = 302607360. Its totient is φ = 80602000.

The previous prime is 161297273. The next prime is 161297317. The reversal of 161297288 is 882792161.

It is an unprimeable number.

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, 12113 + ... + 21663.

It is an arithmetic number, because the mean of its divisors is an integer number (18912960).

Almost surely, 2^161297288 is an apocalyptic number.

It is an amenable number.

161297288 is a deficient number, since it is larger than the sum of its proper divisors (141310072).

161297288 is a wasteful number, since it uses less digits than its factorization.

161297288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11668 (or 11664 counting only the distinct ones).

The product of its digits is 96768, while the sum is 44.

The square root of 161297288 is about 12700.2869258927. The cubic root of 161297288 is about 544.3468178447.

The spelling of 161297288 in words is "one hundred sixty-one million, two hundred ninety-seven thousand, two hundred eighty-eight".