678113280 has 312 divisors, whose sum is σ = 2540258448. Its totient is φ = 166330368.

The previous prime is 678113257. The next prime is 678113291. The reversal of 678113280 is 82311876.

It is a tau number, because it is divible by the number of its divisors (312).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2396019 + ... + 2396301.

It is an arithmetic number, because the mean of its divisors is an integer number (8141854).

Almost surely, 2^678113280 is an apocalyptic number.

678113280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678113280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1270129224).

678113280 is an abundant number, since it is smaller than the sum of its proper divisors (1862145168).

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

678113280 is a wasteful number, since it uses less digits than its factorization.

678113280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 678113280 is about 26040.6082878262. The cubic root of 678113280 is about 878.5518882938.

The spelling of 678113280 in words is "six hundred seventy-eight million, one hundred thirteen thousand, two hundred eighty".