16812541 has 8 divisors (see below), whose sum is σ = 18283320. Its totient is φ = 15395328.

The previous prime is 16812539. The next prime is 16812577. The reversal of 16812541 is 14521861.

It can be written as a sum of positive squares in 4 ways, for example, as 9272025 + 7540516 = 3045^2 + 2746^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16812541 - 2¹ = 16812539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16812941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12736 + ... + 13993.

It is an arithmetic number, because the mean of its divisors is an integer number (2285415).

Almost surely, 2^16812541 is an apocalyptic number.

It is an amenable number.

16812541 is a deficient number, since it is larger than the sum of its proper divisors (1470779).

16812541 is a wasteful number, since it uses less digits than its factorization.

16812541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26783.

The product of its digits is 1920, while the sum is 28.

The square root of 16812541 is about 4100.3098663394. The cubic root of 16812541 is about 256.1795462865.

The spelling of 16812541 in words is "sixteen million, eight hundred twelve thousand, five hundred forty-one".