7872878 has 16 divisors (see below), whose sum is σ = 13387920. Its totient is φ = 3442176.

The previous prime is 7872871. The next prime is 7872883. The reversal of 7872878 is 8782787.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7872871) 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 7 ways as a sum of consecutive naturals, for example, 7475 + ... + 8462.

It is an arithmetic number, because the mean of its divisors is an integer number (836745).

Almost surely, 2^7872878 is an apocalyptic number.

7872878 is a deficient number, since it is larger than the sum of its proper divisors (5515042).

7872878 is a wasteful number, since it uses less digits than its factorization.

7872878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15971.

The product of its digits is 351232, while the sum is 47.

The square root of 7872878 is about 2805.8649290370. The cubic root of 7872878 is about 198.9349888225.

Subtracting 7872878 from its reverse (8782787), we obtain a palindrome (909909).

The spelling of 7872878 in words is "seven million, eight hundred seventy-two thousand, eight hundred seventy-eight".