161232604 has 24 divisors (see below), whose sum is σ = 309017520. Its totient is φ = 73152384.

The previous prime is 161232593. The next prime is 161232647. The reversal of 161232604 is 406232161.

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, 23209 + ... + 29344.

It is an arithmetic number, because the mean of its divisors is an integer number (12875730).

Almost surely, 2^161232604 is an apocalyptic number.

It is an amenable number.

161232604 is a deficient number, since it is larger than the sum of its proper divisors (147784916).

161232604 is a wasteful number, since it uses less digits than its factorization.

161232604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52629 (or 52627 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 161232604 is about 12697.7401138943. The cubic root of 161232604 is about 544.2740428303.

Adding to 161232604 its reverse (406232161), we get a palindrome (567464765).

The spelling of 161232604 in words is "one hundred sixty-one million, two hundred thirty-two thousand, six hundred four".