816336256 has 32 divisors (see below), whose sum is σ = 1627797600. Its totient is φ = 407791104.

The previous prime is 816336251. The next prime is 816336259. The reversal of 816336256 is 652633618.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816336251) 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, 180681 + ... + 185143.

It is an arithmetic number, because the mean of its divisors is an integer number (50868675).

Almost surely, 2^816336256 is an apocalyptic number.

It is an amenable number.

816336256 is a deficient number, since it is larger than the sum of its proper divisors (811461344).

816336256 is a wasteful number, since it uses less digits than its factorization.

816336256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5906 (or 5894 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 816336256 is about 28571.5987652074. The cubic root of 816336256 is about 934.5940857702.

The spelling of 816336256 in words is "eight hundred sixteen million, three hundred thirty-six thousand, two hundred fifty-six".