16453332 has 72 divisors (see below), whose sum is σ = 48048000. Its totient is φ = 4650048.

The previous prime is 16453321. The next prime is 16453357. The reversal of 16453332 is 23335461.

It is a happy number.

Its product of digits (6480) is a multiple of the sum of its prime divisors (720).

It is a junction number, because it is equal to n+sod(n) for n = 16453296 and 16453305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27169 + ... + 27767.

Almost surely, 2^16453332 is an apocalyptic number.

16453332 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 16453332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24024000).

16453332 is an abundant number, since it is smaller than the sum of its proper divisors (31594668).

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

16453332 is a wasteful number, since it uses less digits than its factorization.

16453332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 720 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 16453332 is about 4056.2707010258. The cubic root of 16453332 is about 254.3419248590.

Adding to 16453332 its reverse (23335461), we get a palindrome (39788793).

The spelling of 16453332 in words is "sixteen million, four hundred fifty-three thousand, three hundred thirty-two".