16813136 has 20 divisors (see below), whose sum is σ = 34492212. Its totient is φ = 7911936.

The previous prime is 16813123. The next prime is 16813151. The reversal of 16813136 is 63131861.

It can be written as a sum of positive squares in 2 ways, for example, as 13278736 + 3534400 = 3644^2 + 1880^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16813099 and 16813108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30635 + ... + 31178.

Almost surely, 2^16813136 is an apocalyptic number.

16813136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16813136 is an abundant number, since it is smaller than the sum of its proper divisors (17679076).

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

16813136 is a wasteful number, since it uses less digits than its factorization.

16813136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61838 (or 61832 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 16813136 is about 4100.3824211895. The cubic root of 16813136 is about 256.1825683368.

Adding to 16813136 its reverse (63131861), we get a palindrome (79944997).

It can be divided in two parts, 1681 and 3136, that multiplied together give a square (5271616 = 2296²).

The spelling of 16813136 in words is "sixteen million, eight hundred thirteen thousand, one hundred thirty-six".