813940480 has 36 divisors (see below), whose sum is σ = 1949644872. Its totient is φ = 325575680.

The previous prime is 813940429. The next prime is 813940489. The reversal of 813940480 is 84049318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813940489) 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, 316666 + ... + 319225.

It is an arithmetic number, because the mean of its divisors is an integer number (54156802).

Almost surely, 2^813940480 is an apocalyptic number.

813940480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

813940480 is an abundant number, since it is smaller than the sum of its proper divisors (1135704392).

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

813940480 is an equidigital number, since it uses as much as digits as its factorization.

813940480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635912 (or 635898 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 813940480 is about 28529.6421288456. The cubic root of 813940480 is about 933.6789105791.

Adding to 813940480 its reverse (84049318), we get a palindrome (897989798).

The spelling of 813940480 in words is "eight hundred thirteen million, nine hundred forty thousand, four hundred eighty".