816430 has 16 divisors (see below), whose sum is σ = 1547280. Its totient is φ = 309312.

The previous prime is 816427. The next prime is 816443. The reversal of 816430 is 34618.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

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, 1959 + ... + 2338.

It is an arithmetic number, because the mean of its divisors is an integer number (96705).

2⁸¹⁶⁴³⁰ is an apocalyptic number.

816430 is a deficient number, since it is larger than the sum of its proper divisors (730850).

816430 is a wasteful number, since it uses less digits than its factorization.

816430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4323.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 816430 is about 903.5651609043. The cubic root of 816430 is about 93.4629859115.

The spelling of 816430 in words is "eight hundred sixteen thousand, four hundred thirty".