816044 has 12 divisors (see below), whose sum is σ = 1474368. Its totient is φ = 394800.

The previous prime is 816043. The next prime is 816047. The reversal of 816044 is 440618.

816044 = T₄₇ + T₄₈ + ... + T₁₇₀.

816044 = 147² + 148² + ... + 177².

It is a happy number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (816043) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3167 + ... + 3414.

It is an arithmetic number, because the mean of its divisors is an integer number (122864).

2⁸¹⁶⁰⁴⁴ is an apocalyptic number.

It is an amenable number.

816044 is a deficient number, since it is larger than the sum of its proper divisors (658324).

816044 is a wasteful number, since it uses less digits than its factorization.

816044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6616 (or 6614 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 816044 is about 903.3515373320. The cubic root of 816044 is about 93.4482541322.

The spelling of 816044 in words is "eight hundred sixteen thousand, forty-four".