811480784 has 20 divisors (see below), whose sum is σ = 1626460260. Its totient is φ = 391749120.

The previous prime is 811480783. The next prime is 811480799. The reversal of 811480784 is 487084118.

It can be written as a sum of positive squares in 2 ways, for example, as 225840784 + 585640000 = 15028^2 + 24200^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811480783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 873977 + ... + 874904.

It is an arithmetic number, because the mean of its divisors is an integer number (81323013).

Almost surely, 2^811480784 is an apocalyptic number.

It is an amenable number.

811480784 is an abundant number, since it is smaller than the sum of its proper divisors (814979476).

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

811480784 is a wasteful number, since it uses less digits than its factorization.

811480784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748918 (or 1748912 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 41.

The square root of 811480784 is about 28486.5017859336. The cubic root of 811480784 is about 932.7374479835.

The spelling of 811480784 in words is "eight hundred eleven million, four hundred eighty thousand, seven hundred eighty-four".