120812636 has 18 divisors (see below), whose sum is σ = 245940408. Its totient is φ = 51776760.

The previous prime is 120812633. The next prime is 120812639. The reversal of 120812636 is 636218021.

It is an interprime number because it is at equal distance from previous prime (120812633) and next prime (120812639).

It is a junction number, because it is equal to n+sod(n) for n = 120812599 and 120812608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120812633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308000 + ... + 308391.

It is an arithmetic number, because the mean of its divisors is an integer number (13663356).

Almost surely, 2^120812636 is an apocalyptic number.

It is an amenable number.

120812636 is an abundant number, since it is smaller than the sum of its proper divisors (125127772).

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

120812636 is a wasteful number, since it uses less digits than its factorization.

120812636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616409 (or 616400 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 120812636 is about 10991.4801551020. The cubic root of 120812636 is about 494.3533180247.

The spelling of 120812636 in words is "one hundred twenty million, eight hundred twelve thousand, six hundred thirty-six".