161404232 has 16 divisors (see below), whose sum is σ = 330145200. Its totient is φ = 73365520.

The previous prime is 161404223. The next prime is 161404253. The reversal of 161404232 is 232404161.

161404232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161404232² = 52102652215019648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161404198 and 161404207.

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, 916982 + ... + 917157.

It is an arithmetic number, because the mean of its divisors is an integer number (20634075).

Almost surely, 2^161404232 is an apocalyptic number.

It is an amenable number.

161404232 is an abundant number, since it is smaller than the sum of its proper divisors (168740968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161404232 is a wasteful number, since it uses less digits than its factorization.

161404232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834156 (or 1834152 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 161404232 is about 12704.4965268207. The cubic root of 161404232 is about 544.4670962979.

Adding to 161404232 its reverse (232404161), we get a palindrome (393808393).

The spelling of 161404232 in words is "one hundred sixty-one million, four hundred four thousand, two hundred thirty-two".