16251136 has 72 divisors (see below), whose sum is σ = 36792000. Its totient is φ = 7096320.

The previous prime is 16251113. The next prime is 16251149. The reversal of 16251136 is 63115261.

It is a self number, because there is not a number n which added to its sum of digits gives 16251136.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81565 + ... + 81763.

It is an arithmetic number, because the mean of its divisors is an integer number (511000).

Almost surely, 2^16251136 is an apocalyptic number.

16251136 is a gapful number since it is divisible by the number (16) 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 16251136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18396000).

16251136 is an abundant number, since it is smaller than the sum of its proper divisors (20540864).

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

16251136 is a wasteful number, since it uses less digits than its factorization.

16251136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 241 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

The square root of 16251136 is about 4031.2697751453. The cubic root of 16251136 is about 253.2957531205.

Adding to 16251136 its reverse (63115261), we get a palindrome (79366397).

It can be divided in two parts, 16 and 251136, that added together give a palindrome (251152).

The spelling of 16251136 in words is "sixteen million, two hundred fifty-one thousand, one hundred thirty-six".