161232238 has 8 divisors (see below), whose sum is σ = 241938000. Its totient is φ = 80586240.

The previous prime is 161232229. The next prime is 161232251. The reversal of 161232238 is 832232161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7443 + ... + 19438.

It is an arithmetic number, because the mean of its divisors is an integer number (30242250).

Almost surely, 2^161232238 is an apocalyptic number.

161232238 is a deficient number, since it is larger than the sum of its proper divisors (80705762).

161232238 is a wasteful number, since it uses less digits than its factorization.

161232238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29882.

The product of its digits is 3456, while the sum is 28.

The square root of 161232238 is about 12697.7257018728. The cubic root of 161232238 is about 544.2736309937.

Adding to 161232238 its reverse (832232161), we get a palindrome (993464399).

The spelling of 161232238 in words is "one hundred sixty-one million, two hundred thirty-two thousand, two hundred thirty-eight".