823216456 has 16 divisors (see below), whose sum is σ = 1544007600. Its totient is φ = 411481104.

The previous prime is 823216453. The next prime is 823216463. The reversal of 823216456 is 654612328.

It is not an unprimeable number, because it can be changed into a prime (823216451) 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, 15211 + ... + 43333.

It is an arithmetic number, because the mean of its divisors is an integer number (96500475).

Almost surely, 2^823216456 is an apocalyptic number.

It is an amenable number.

823216456 is a deficient number, since it is larger than the sum of its proper divisors (720791144).

823216456 is a wasteful number, since it uses less digits than its factorization.

823216456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31788 (or 31784 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 823216456 is about 28691.7489184609. The cubic root of 823216456 is about 937.2123750783.

The spelling of 823216456 in words is "eight hundred twenty-three million, two hundred sixteen thousand, four hundred fifty-six".