878138352 has 240 divisors, whose sum is σ = 3184796160. Its totient is φ = 219345408.

The previous prime is 878138351. The next prime is 878138363. The reversal of 878138352 is 253831878.

It is a super-2 number, since 2×878138352² = 1542253930506551808, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 878138298 and 878138307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878138351) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 247213 + ... + 250739.

It is an arithmetic number, because the mean of its divisors is an integer number (13269984).

Almost surely, 2^878138352 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 878138352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1592398080).

878138352 is an abundant number, since it is smaller than the sum of its proper divisors (2306657808).

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

878138352 is a wasteful number, since it uses less digits than its factorization.

878138352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3580 (or 3571 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 878138352 is about 29633.3992650185. The cubic root of 878138352 is about 957.6077415136.

The spelling of 878138352 in words is "eight hundred seventy-eight million, one hundred thirty-eight thousand, three hundred fifty-two".