178120012 has 12 divisors (see below), whose sum is σ = 356240080. Its totient is φ = 76337136.

The previous prime is 178120009. The next prime is 178120013. The reversal of 178120012 is 210021871.

178120012 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (178120013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3180687 + ... + 3180742.

Almost surely, 2^178120012 is an apocalyptic number.

It is an amenable number.

178120012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

178120012 is a wasteful number, since it uses less digits than its factorization.

178120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6361440 (or 6361438 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 178120012 is about 13346.1609461298. The cubic root of 178120012 is about 562.6490266539.

Adding to 178120012 its reverse (210021871), we get a palindrome (388141883).

The spelling of 178120012 in words is "one hundred seventy-eight million, one hundred twenty thousand, twelve".