812380 has 24 divisors (see below), whose sum is σ = 1723680. Its totient is φ = 321600.

The previous prime is 812363. The next prime is 812381. The reversal of 812380 is 83218.

812380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×812380² = 1319922528800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812381) 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, 2886 + ... + 3154.

It is an arithmetic number, because the mean of its divisors is an integer number (71820).

2⁸¹²³⁸⁰ is an apocalyptic number.

It is an amenable number.

812380 is an abundant number, since it is smaller than the sum of its proper divisors (911300).

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

812380 is a wasteful number, since it uses less digits than its factorization.

812380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 812380 is about 901.3212523845. The cubic root of 812380 is about 93.3081848344.

Adding to 812380 its reverse (83218), we get a palindrome (895598).

The spelling of 812380 in words is "eight hundred twelve thousand, three hundred eighty".