16812029 has 4 divisors (see below), whose sum is σ = 18105276. Its totient is φ = 15518784.

The previous prime is 16811999. The next prime is 16812043. The reversal of 16812029 is 92021861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9467929 + 7344100 = 3077^2 + 2710^2 .

It is a cyclic number.

It is not a de Polignac number, because 16812029 - 2²⁰ = 15763453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16811992 and 16812010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16812529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646604 + ... + 646629.

It is an arithmetic number, because the mean of its divisors is an integer number (4526319).

Almost surely, 2^16812029 is an apocalyptic number.

It is an amenable number.

16812029 is a deficient number, since it is larger than the sum of its proper divisors (1293247).

16812029 is a wasteful number, since it uses less digits than its factorization.

16812029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293246.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 16812029 is about 4100.2474315582. The cubic root of 16812029 is about 256.1769457425.

The spelling of 16812029 in words is "sixteen million, eight hundred twelve thousand, twenty-nine".