811448 has 16 divisors (see below), whose sum is σ = 1659960. Its totient is φ = 368800.

The previous prime is 811441. The next prime is 811457. The reversal of 811448 is 844118.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 811448.

It is not an unprimeable number, because it can be changed into a prime (811441) by changing a digit.

811448 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 in 3 ways as a sum of consecutive naturals, for example, 4523 + ... + 4698.

2⁸¹¹⁴⁴⁸ is an apocalyptic number.

811448 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

811448 is the 482-nd centered heptagonal number.

It is an amenable number.

811448 is an abundant number, since it is smaller than the sum of its proper divisors (848512).

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

811448 is a wasteful number, since it uses less digits than its factorization.

811448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9238 (or 9234 counting only the distinct ones).

The product of its digits is 1024, while the sum is 26.

The square root of 811448 is about 900.8040852483. The cubic root of 811448 is about 93.2724886882.

The spelling of 811448 in words is "eight hundred eleven thousand, four hundred forty-eight".