16145616 has 40 divisors (see below), whose sum is σ = 42841504. Its totient is φ = 5235840.

The previous prime is 16145599. The next prime is 16145617. The reversal of 16145616 is 61654161.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16145617) by changing a digit.

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, 2770 + ... + 6321.

Almost surely, 2^16145616 is an apocalyptic number.

16145616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16145616 is an abundant number, since it is smaller than the sum of its proper divisors (26695888).

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

16145616 is a wasteful number, since it uses less digits than its factorization.

16145616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9139 (or 9133 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 16145616 is about 4018.1607732892. The cubic root of 16145616 is about 252.7463386877.

Adding to 16145616 its reverse (61654161), we get a palindrome (77799777).

It can be divided in two parts, 16145 and 616, that added together give a palindrome (16761).

The spelling of 16145616 in words is "sixteen million, one hundred forty-five thousand, six hundred sixteen".