156866012 has 6 divisors (see below), whose sum is σ = 274515528. Its totient is φ = 78433004.

The previous prime is 156866011. The next prime is 156866023. The reversal of 156866012 is 210668651.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156866011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19608248 + ... + 19608255.

It is an arithmetic number, because the mean of its divisors is an integer number (45752588).

Almost surely, 2^156866012 is an apocalyptic number.

It is an amenable number.

156866012 is a deficient number, since it is larger than the sum of its proper divisors (117649516).

156866012 is a wasteful number, since it uses less digits than its factorization.

156866012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39216507 (or 39216505 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 156866012 is about 12524.6162416259. The cubic root of 156866012 is about 539.3155617540.

The spelling of 156866012 in words is "one hundred fifty-six million, eight hundred sixty-six thousand, twelve".