878004642 has 16 divisors (see below), whose sum is σ = 1761318432. Its totient is φ = 291783360.

The previous prime is 878004629. The next prime is 878004643. The reversal of 878004642 is 246400878.

It is a self number, because there is not a number n which added to its sum of digits gives 878004642.

It is not an unprimeable number, because it can be changed into a prime (878004643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219063 + ... + 223034.

It is an arithmetic number, because the mean of its divisors is an integer number (110082402).

Almost surely, 2^878004642 is an apocalyptic number.

878004642 is an abundant number, since it is smaller than the sum of its proper divisors (883313790).

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

878004642 is a wasteful number, since it uses less digits than its factorization.

878004642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442433.

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 878004642 is about 29631.1431099106. The cubic root of 878004642 is about 957.5591355697.

The spelling of 878004642 in words is "eight hundred seventy-eight million, four thousand, six hundred forty-two".