878381280 has 384 divisors, whose sum is σ = 3630735360. Its totient is φ = 194088960.

The previous prime is 878381263. The next prime is 878381299. The reversal of 878381280 is 82183878.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 936972 + ... + 937908.

It is an arithmetic number, because the mean of its divisors is an integer number (9455040).

Almost surely, 2^878381280 is an apocalyptic number.

878381280 is a gapful number since it is divisible by the number (80) 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 878381280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1815367680).

878381280 is an abundant number, since it is smaller than the sum of its proper divisors (2752354080).

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

878381280 is a wasteful number, since it uses less digits than its factorization.

878381280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999 (or 985 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 45.

The square root of 878381280 is about 29637.4978700969. The cubic root of 878381280 is about 957.6960375035.

The spelling of 878381280 in words is "eight hundred seventy-eight million, three hundred eighty-one thousand, two hundred eighty".