813376880 has 20 divisors (see below), whose sum is σ = 1891101432. Its totient is φ = 325350720.

The previous prime is 813376799. The next prime is 813376903. The reversal of 813376880 is 88673318.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×813376880³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5083526 + ... + 5083685.

Almost surely, 2^813376880 is an apocalyptic number.

813376880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

813376880 is an abundant number, since it is smaller than the sum of its proper divisors (1077724552).

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

813376880 is a wasteful number, since it uses less digits than its factorization.

813376880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10167224 (or 10167218 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 813376880 is about 28519.7629723671. The cubic root of 813376880 is about 933.4633571688.

The spelling of 813376880 in words is "eight hundred thirteen million, three hundred seventy-six thousand, eight hundred eighty".