816492 has 12 divisors (see below), whose sum is σ = 1905176. Its totient is φ = 272160.

The previous prime is 816469. The next prime is 816499. The reversal of 816492 is 294618.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (816499) by changing a digit.

816492 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34009 + ... + 34032.

2⁸¹⁶⁴⁹² is an apocalyptic number.

It is an amenable number.

816492 is an abundant number, since it is smaller than the sum of its proper divisors (1088684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

816492 is a wasteful number, since it uses less digits than its factorization.

816492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68048 (or 68046 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 816492 is about 903.5994687913. The cubic root of 816492 is about 93.4653517230.

It can be divided in two parts, 8164 and 92, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 816492 in words is "eight hundred sixteen thousand, four hundred ninety-two".