16405132 has 12 divisors (see below), whose sum is σ = 30220120. Its totient is φ = 7770816.

The previous prime is 16405121. The next prime is 16405139. The reversal of 16405132 is 23150461.

16405132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (16405139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107853 + ... + 108004.

Almost surely, 2^16405132 is an apocalyptic number.

It is an amenable number.

16405132 is a deficient number, since it is larger than the sum of its proper divisors (13814988).

16405132 is a wasteful number, since it uses less digits than its factorization.

16405132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215880 (or 215878 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 16405132 is about 4050.3249252375. The cubic root of 16405132 is about 254.0933172320.

Adding to 16405132 its reverse (23150461), we get a palindrome (39555593).

The spelling of 16405132 in words is "sixteen million, four hundred five thousand, one hundred thirty-two".