161029432 has 8 divisors (see below), whose sum is σ = 301930200. Its totient is φ = 80514712.

The previous prime is 161029403. The next prime is 161029433. The reversal of 161029432 is 234920161.

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 161029432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161029433) by changing a digit.

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 as a sum of consecutive naturals, namely, 10064332 + ... + 10064347.

It is an arithmetic number, because the mean of its divisors is an integer number (37741275).

Almost surely, 2^161029432 is an apocalyptic number.

It is an amenable number.

161029432 is a deficient number, since it is larger than the sum of its proper divisors (140900768).

161029432 is a wasteful number, since it uses less digits than its factorization.

161029432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20128685 (or 20128681 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 161029432 is about 12689.7372707239. The cubic root of 161029432 is about 544.0453303489.

Adding to 161029432 its reverse (234920161), we get a palindrome (395949593).

The spelling of 161029432 in words is "one hundred sixty-one million, twenty-nine thousand, four hundred thirty-two".