16109136 has 30 divisors (see below), whose sum is σ = 45083610. Its totient is φ = 5369664.

The previous prime is 16109113. The next prime is 16109143. The reversal of 16109136 is 63190161.

It can be written as a sum of positive squares in only one way, i.e., 8156736 + 7952400 = 2856^2 + 2820^2 .

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 5 ways as a sum of consecutive naturals, for example, 55791 + ... + 56078.

It is an arithmetic number, because the mean of its divisors is an integer number (1502787).

Almost surely, 2^16109136 is an apocalyptic number.

16109136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16109136 is an abundant number, since it is smaller than the sum of its proper divisors (28974474).

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

16109136 is a wasteful number, since it uses less digits than its factorization.

16109136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111883 (or 111874 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 16109136 is about 4013.6188159814. The cubic root of 16109136 is about 252.5558403442. Note that the first 3 decimals are identical.

Adding to 16109136 its reverse (63190161), we get a palindrome (79299297).

The spelling of 16109136 in words is "sixteen million, one hundred nine thousand, one hundred thirty-six".