816448 has 14 divisors (see below), whose sum is σ = 1620266. Its totient is φ = 408192.

The previous prime is 816443. The next prime is 816451. The reversal of 816448 is 844618.

It can be written as a sum of positive squares in only one way, i.e., 719104 + 97344 = 848^2 + 312^2 .

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816443) by changing a digit.

816448 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6315 + ... + 6442.

2⁸¹⁶⁴⁴⁸ is an apocalyptic number.

It is an amenable number.

816448 is a deficient number, since it is larger than the sum of its proper divisors (803818).

816448 is a wasteful number, since it uses less digits than its factorization.

816448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12769 (or 12759 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 816448 is about 903.5751213928. The cubic root of 816448 is about 93.4636727723.

The spelling of 816448 in words is "eight hundred sixteen thousand, four hundred forty-eight".