16420432 has 40 divisors (see below), whose sum is σ = 36561152. Its totient is φ = 6998400.

The previous prime is 16420423. The next prime is 16420433. The reversal of 16420432 is 23402461.

It is a happy number.

16420432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16420433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30082 + ... + 30622.

Almost surely, 2^16420432 is an apocalyptic number.

It is an amenable number.

16420432 is an abundant number, since it is smaller than the sum of its proper divisors (20140720).

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

16420432 is a wasteful number, since it uses less digits than its factorization.

16420432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 16420432 is about 4052.2132224255. The cubic root of 16420432 is about 254.1722847933.

Adding to 16420432 its reverse (23402461), we get a palindrome (39822893).

The spelling of 16420432 in words is "sixteen million, four hundred twenty thousand, four hundred thirty-two".