878403240 has 384 divisors, whose sum is σ = 3405991680. Its totient is φ = 193536000.

The previous prime is 878403217. The next prime is 878403241. The reversal of 878403240 is 42304878.

878403240 is a `hidden beast` number, since 8 + 7 + 8 + 403 + 240 = 666.

It is a super-3 number, since 3×878403240³ (a number of 28 digits) contains 333 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 878403195 and 878403204.

It is not an unprimeable number, because it can be changed into a prime (878403241) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5817165 + ... + 5817315.

It is an arithmetic number, because the mean of its divisors is an integer number (8869770).

Almost surely, 2^878403240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 878403240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1702995840).

878403240 is an abundant number, since it is smaller than the sum of its proper divisors (2527588440).

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

878403240 is a wasteful number, since it uses less digits than its factorization.

878403240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 878403240 is about 29637.8683444002. The cubic root of 878403240 is about 957.7040184074.

The spelling of 878403240 in words is "eight hundred seventy-eight million, four hundred three thousand, two hundred forty".