878844720 has 320 divisors, whose sum is σ = 3153798144. Its totient is φ = 200724480.

The previous prime is 878844679. The next prime is 878844803. The reversal of 878844720 is 27448878.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 878844720.

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, 2654955 + ... + 2655285.

Almost surely, 2^878844720 is an apocalyptic number.

878844720 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 878844720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1576899072).

878844720 is an abundant number, since it is smaller than the sum of its proper divisors (2274953424).

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

878844720 is a wasteful number, since it uses less digits than its factorization.

878844720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 802816, while the sum is 48.

The square root of 878844720 is about 29645.3153128787. The cubic root of 878844720 is about 957.8644368944.

The spelling of 878844720 in words is "eight hundred seventy-eight million, eight hundred forty-four thousand, seven hundred twenty".