816030029 has 4 divisors (see below), whose sum is σ = 831426876. Its totient is φ = 800633184.

The previous prime is 816029983. The next prime is 816030037. The reversal of 816030029 is 920030618.

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 358155625 + 457874404 = 18925^2 + 21398^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-816030029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 816029983 and 816030010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816030629) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7698344 + ... + 7698449.

It is an arithmetic number, because the mean of its divisors is an integer number (207856719).

Almost surely, 2^816030029 is an apocalyptic number.

It is an amenable number.

816030029 is a deficient number, since it is larger than the sum of its proper divisors (15396847).

816030029 is a wasteful number, since it uses less digits than its factorization.

816030029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15396846.

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

The square root of 816030029 is about 28566.2393219689. The cubic root of 816030029 is about 934.4772083866.

The spelling of 816030029 in words is "eight hundred sixteen million, thirty thousand, twenty-nine".