811126380 has 48 divisors (see below), whose sum is σ = 2277757440. Its totient is φ = 215671488.

The previous prime is 811126373. The next prime is 811126387. The reversal of 811126380 is 83621118.

It is an interprime number because it is at equal distance from previous prime (811126373) and next prime (811126387).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (811126387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1341 + ... + 40299.

It is an arithmetic number, because the mean of its divisors is an integer number (47453280).

Almost surely, 2^811126380 is an apocalyptic number.

It is an amenable number.

811126380 is an abundant number, since it is smaller than the sum of its proper divisors (1466631060).

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

811126380 is a wasteful number, since it uses less digits than its factorization.

811126380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39318 (or 39316 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 811126380 is about 28480.2805463710. The cubic root of 811126380 is about 932.6016411046.

Adding to 811126380 its reverse (83621118), we get a palindrome (894747498).

The spelling of 811126380 in words is "eight hundred eleven million, one hundred twenty-six thousand, three hundred eighty".