16481500 has 96 divisors (see below), whose sum is σ = 43714944. Its totient is φ = 5299200.

The previous prime is 16481497. The next prime is 16481519. The reversal of 16481500 is 518461.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59362 + ... + 59638.

It is an arithmetic number, because the mean of its divisors is an integer number (455364).

Almost surely, 2^16481500 is an apocalyptic number.

16481500 is a gapful number since it is divisible by the number (10) 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 16481500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21857472).

16481500 is an abundant number, since it is smaller than the sum of its proper divisors (27233444).

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

16481500 is a wasteful number, since it uses less digits than its factorization.

16481500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 16481500 is about 4059.7413710728. The cubic root of 16481500 is about 254.4869860298.

Adding to 16481500 its reverse (518461), we get a palindrome (16999961).

The spelling of 16481500 in words is "sixteen million, four hundred eighty-one thousand, five hundred".