161648224 has 24 divisors (see below), whose sum is σ = 319281480. Its totient is φ = 80560896.

The previous prime is 161648213. The next prime is 161648237. The reversal of 161648224 is 422846161.

It is a super-2 number, since 2×161648224² = 52260296644708352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161648224.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1947 + ... + 18085.

It is an arithmetic number, because the mean of its divisors is an integer number (13303395).

Almost surely, 2^161648224 is an apocalyptic number.

It is an amenable number.

161648224 is a deficient number, since it is larger than the sum of its proper divisors (157633256).

161648224 is a wasteful number, since it uses less digits than its factorization.

161648224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16462 (or 16454 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 161648224 is about 12714.0954849332. The cubic root of 161648224 is about 544.7413120152.

The spelling of 161648224 in words is "one hundred sixty-one million, six hundred forty-eight thousand, two hundred twenty-four".