816452 has 24 divisors (see below), whose sum is σ = 1759296. Its totient is φ = 322848.

The previous prime is 816451. The next prime is 816469. The reversal of 816452 is 254618.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (816451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758 + ... + 1485.

It is an arithmetic number, because the mean of its divisors is an integer number (73304).

2⁸¹⁶⁴⁵² is an apocalyptic number.

It is an amenable number.

816452 is an abundant number, since it is smaller than the sum of its proper divisors (942844).

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

816452 is a wasteful number, since it uses less digits than its factorization.

816452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267 (or 2265 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 816452 is about 903.5773348198. The cubic root of 816452 is about 93.4638254067.

The spelling of 816452 in words is "eight hundred sixteen thousand, four hundred fifty-two".