16451136 has 105 divisors (see below), whose sum is σ = 51083591. Its totient is φ = 5061888.

The previous prime is 16451129. The next prime is 16451137. The reversal of 16451136 is 63115461.

The square root of 16451136 is 4056.

It is a perfect power (a square), and thus also a powerful number.

16451136 is a `hidden beast` number, since 1 + 645 + 1 + 13 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8156736 + 8294400 = 2856^2 + 2880^2 .

Its product of digits (2160) is a multiple of the sum of its prime divisors (18).

It is not an unprimeable number, because it can be changed into a prime (16451137) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1265466 + ... + 1265478.

Almost surely, 2^16451136 is an apocalyptic number.

16451136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

16451136 is the 4056-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16451136

16451136 is an abundant number, since it is smaller than the sum of its proper divisors (34632455).

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

16451136 is an frugal number, since it uses more digits than its factorization.

16451136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 18 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The cubic root of 16451136 is about 254.3306088185.

Adding to 16451136 its reverse (63115461), we get a palindrome (79566597).

The spelling of 16451136 in words is "sixteen million, four hundred fifty-one thousand, one hundred thirty-six".