7885878 has 96 divisors (see below), whose sum is σ = 21503232. Its totient is φ = 1872000.

The previous prime is 7885861. The next prime is 7885879. The reversal of 7885878 is 8785887.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 7885878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7885879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78028 + ... + 78128.

It is an arithmetic number, because the mean of its divisors is an integer number (223992).

Almost surely, 2^7885878 is an apocalyptic number.

7885878 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7885878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10751616).

7885878 is an abundant number, since it is smaller than the sum of its proper divisors (13617354).

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

7885878 is a wasteful number, since it uses less digits than its factorization.

7885878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 137 counting only the distinct ones).

The product of its digits is 1003520, while the sum is 51.

The square root of 7885878 is about 2808.1805497510. The cubic root of 7885878 is about 199.0444249866.

Subtracting 7885878 from its reverse (8785887), we obtain a palindrome (900009).

It can be divided in two parts, 788 and 5878, that added together give a palindrome (6666).

The spelling of 7885878 in words is "seven million, eight hundred eighty-five thousand, eight hundred seventy-eight".