878320146 has 32 divisors (see below), whose sum is σ = 1919520000. Its totient is φ = 265715280.

The previous prime is 878320141. The next prime is 878320169. The reversal of 878320146 is 641023878.

It is a super-2 number, since 2×878320146² = 1542892557738922632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (878320141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30105 + ... + 51603.

It is an arithmetic number, because the mean of its divisors is an integer number (59985000).

Almost surely, 2^878320146 is an apocalyptic number.

878320146 is an abundant number, since it is smaller than the sum of its proper divisors (1041199854).

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

878320146 is a wasteful number, since it uses less digits than its factorization.

878320146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22134.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 878320146 is about 29636.4664897825. The cubic root of 878320146 is about 957.6738189259.

The spelling of 878320146 in words is "eight hundred seventy-eight million, three hundred twenty thousand, one hundred forty-six".