876380978 has 30 divisors (see below), whose sum is σ = 1454426445. Its totient is φ = 396052360.

The previous prime is 876380977. The next prime is 876381007. The reversal of 876380978 is 879083678.

It can be written as a sum of positive squares in 2 ways, for example, as 689430049 + 186950929 = 26257^2 + 13673^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=20933.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (876380977) 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 14 ways as a sum of consecutive naturals, for example, 5065700 + ... + 5065872.

Almost surely, 2^876380978 is an apocalyptic number.

876380978 is a deficient number, since it is larger than the sum of its proper divisors (578045467).

876380978 is an frugal number, since it uses more digits than its factorization.

876380978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 56.

The square root of 876380978 is about 29603.7325011560. The cubic root of 876380978 is about 956.9685108765.

The spelling of 876380978 in words is "eight hundred seventy-six million, three hundred eighty thousand, nine hundred seventy-eight".