16408332 has 84 divisors (see below), whose sum is σ = 45722376. Its totient is φ = 5132160.

The previous prime is 16408319. The next prime is 16408333. The reversal of 16408332 is 23380461.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 16408296 and 16408305.

It is not an unprimeable number, because it can be changed into a prime (16408333) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 49407 + ... + 49737.

It is an arithmetic number, because the mean of its divisors is an integer number (544314).

Almost surely, 2^16408332 is an apocalyptic number.

16408332 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 16408332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22861188).

16408332 is an abundant number, since it is smaller than the sum of its proper divisors (29314044).

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

16408332 is a wasteful number, since it uses less digits than its factorization.

16408332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 16408332 is about 4050.7199360114. The cubic root of 16408332 is about 254.1098373825.

Adding to 16408332 its reverse (23380461), we get a palindrome (39788793).

The spelling of 16408332 in words is "sixteen million, four hundred eight thousand, three hundred thirty-two".