16420032 has 84 divisors (see below), whose sum is σ = 48737520. Its totient is φ = 5279232.

The previous prime is 16420031. The next prime is 16420043. The reversal of 16420032 is 23002461.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 16419987 and 16420014.

It is not an unprimeable number, because it can be changed into a prime (16420031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16213 + ... + 17195.

Almost surely, 2^16420032 is an apocalyptic number.

16420032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16420032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24368760).

16420032 is an abundant number, since it is smaller than the sum of its proper divisors (32317488).

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

16420032 is a wasteful number, since it uses less digits than its factorization.

16420032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030 (or 1017 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 16420032 is about 4052.1638663805. The cubic root of 16420032 is about 254.1702209064.

Adding to 16420032 its reverse (23002461), we get a palindrome (39422493).

The spelling of 16420032 in words is "sixteen million, four hundred twenty thousand, thirty-two".