810540 has 96 divisors (see below), whose sum is σ = 2688000. Its totient is φ = 202176.

The previous prime is 810539. The next prime is 810541. The reversal of 810540 is 45018.

810540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (810539) and next prime (810541).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (810541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10221 + ... + 10299.

It is an arithmetic number, because the mean of its divisors is an integer number (28000).

2⁸¹⁰⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 810540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1344000).

810540 is an abundant number, since it is smaller than the sum of its proper divisors (1877460).

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

810540 is a wasteful number, since it uses less digits than its factorization.

810540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 810540 is about 900.2999500167. The cubic root of 810540 is about 93.2376854604.

Adding to 810540 its reverse (45018), we get a palindrome (855558).

The spelling of 810540 in words is "eight hundred ten thousand, five hundred forty".