814163280 has 80 divisors (see below), whose sum is σ = 2884470144. Its totient is φ = 186094080.

The previous prime is 814163257. The next prime is 814163293. The reversal of 814163280 is 82361418.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×814163280³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240631 + ... + 243990.

Almost surely, 2^814163280 is an apocalyptic number.

814163280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

814163280 is an abundant number, since it is smaller than the sum of its proper divisors (2070306864).

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

814163280 is a wasteful number, since it uses less digits than its factorization.

814163280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484644 (or 484638 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 814163280 is about 28533.5465724119. The cubic root of 814163280 is about 933.7640948108.

The spelling of 814163280 in words is "eight hundred fourteen million, one hundred sixty-three thousand, two hundred eighty".