813812480 has 72 divisors (see below), whose sum is σ = 2099326992. Its totient is φ = 300478464.

The previous prime is 813812459. The next prime is 813812497. The reversal of 813812480 is 84218318.

It is a self number, because there is not a number n which added to its sum of digits gives 813812480.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7814 + ... + 41093.

Almost surely, 2^813812480 is an apocalyptic number.

813812480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

813812480 is an abundant number, since it is smaller than the sum of its proper divisors (1285514512).

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

813812480 is a wasteful number, since it uses less digits than its factorization.

813812480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48941 (or 48927 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 813812480 is about 28527.3987597888. The cubic root of 813812480 is about 933.6299646718.

The spelling of 813812480 in words is "eight hundred thirteen million, eight hundred twelve thousand, four hundred eighty".