2178287952 has 40 divisors (see below), whose sum is σ = 5706509760. Its totient is φ = 715868160.

The previous prime is 2178287941. The next prime is 2178287971. The reversal of 2178287952 is 2597828712.

It is a junction number, because it is equal to n+sod(n) for n = 2178287895 and 2178287904.

It is a congruent number.

It is an unprimeable number.

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, 316177 + ... + 322992.

It is an arithmetic number, because the mean of its divisors is an integer number (142662744).

Almost surely, 2^2178287952 is an apocalyptic number.

It is an amenable number.

2178287952 is an abundant number, since it is smaller than the sum of its proper divisors (3528221808).

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

2178287952 is a wasteful number, since it uses less digits than its factorization.

2178287952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639251 (or 639245 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 51.

The square root of 2178287952 is about 46672.1324989549. The cubic root of 2178287952 is about 1296.2987327666.

The spelling of 2178287952 in words is "two billion, one hundred seventy-eight million, two hundred eighty-seven thousand, nine hundred fifty-two".