816204023 has 4 divisors (see below), whose sum is σ = 818335488. Its totient is φ = 814072560.

The previous prime is 816204019. The next prime is 816204029. The reversal of 816204023 is 320402618.

816204023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 816204023 - 2² = 816204019 is a prime.

It is a super-2 number, since 2×816204023² = 1332378014322769058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 816203983 and 816204001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816204029) 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, 1065158 + ... + 1065923.

It is an arithmetic number, because the mean of its divisors is an integer number (204583872).

Almost surely, 2^816204023 is an apocalyptic number.

816204023 is a deficient number, since it is larger than the sum of its proper divisors (2131465).

816204023 is a wasteful number, since it uses less digits than its factorization.

816204023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131464.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 816204023 is about 28569.2846077741. The cubic root of 816204023 is about 934.5436201063.

The spelling of 816204023 in words is "eight hundred sixteen million, two hundred four thousand, twenty-three".