16454538 has 24 divisors (see below), whose sum is σ = 37749348. Its totient is φ = 5162112.

The previous prime is 16454497. The next prime is 16454561. The reversal of 16454538 is 83545461.

It is a happy number.

16454538 is a `hidden beast` number, since 1 + 645 + 4 + 5 + 3 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15468489 + 986049 = 3933^2 + 993^2 .

It is a Curzon 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 11 ways as a sum of consecutive naturals, for example, 26581 + ... + 27192.

Almost surely, 2^16454538 is an apocalyptic number.

16454538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

16454538 is an abundant number, since it is smaller than the sum of its proper divisors (21294810).

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

16454538 is a wasteful number, since it uses less digits than its factorization.

16454538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53798 (or 53795 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 16454538 is about 4056.4193570192. The cubic root of 16454538 is about 254.3481389776.

Adding to 16454538 its reverse (83545461), we get a palindrome (99999999).

It can be divided in two parts, 1645453 and 8, that added together give a palindrome (1645461).

The spelling of 16454538 in words is "sixteen million, four hundred fifty-four thousand, five hundred thirty-eight".