216834029 has 4 divisors (see below), whose sum is σ = 217047840. Its totient is φ = 216620220.

The previous prime is 216834019. The next prime is 216834047. The reversal of 216834029 is 920438612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216834029 - 2¹² = 216829933 is a prime.

It is a super-2 number, since 2×216834029² = 94033992264745682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 216834029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216834019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105377 + ... + 107414.

It is an arithmetic number, because the mean of its divisors is an integer number (54261960).

Almost surely, 2^216834029 is an apocalyptic number.

It is an amenable number.

216834029 is a deficient number, since it is larger than the sum of its proper divisors (213811).

216834029 is a wasteful number, since it uses less digits than its factorization.

216834029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213810.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 216834029 is about 14725.2853622604. The cubic root of 216834029 is about 600.7712572530.

The spelling of 216834029 in words is "two hundred sixteen million, eight hundred thirty-four thousand, twenty-nine".