161233528 has 8 divisors (see below), whose sum is σ = 302312880. Its totient is φ = 80616760.

The previous prime is 161233507. The next prime is 161233529. The reversal of 161233528 is 825332161.

161233528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 161233528.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161233529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10077088 + ... + 10077103.

It is an arithmetic number, because the mean of its divisors is an integer number (37789110).

Almost surely, 2^161233528 is an apocalyptic number.

It is an amenable number.

161233528 is a deficient number, since it is larger than the sum of its proper divisors (141079352).

161233528 is a wasteful number, since it uses less digits than its factorization.

161233528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20154197 (or 20154193 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 161233528 is about 12697.7764982693. The cubic root of 161233528 is about 544.2750825461.

Adding to 161233528 its reverse (825332161), we get a palindrome (986565689).

The spelling of 161233528 in words is "one hundred sixty-one million, two hundred thirty-three thousand, five hundred twenty-eight".