20135912 has 16 divisors (see below), whose sum is σ = 38319360. Its totient is φ = 9917424.

The previous prime is 20135909. The next prime is 20135923. The reversal of 20135912 is 21953102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18248 + ... + 19319.

It is an arithmetic number, because the mean of its divisors is an integer number (2394960).

Almost surely, 2^20135912 is an apocalyptic number.

It is an amenable number.

20135912 is a deficient number, since it is larger than the sum of its proper divisors (18183448).

20135912 is a wasteful number, since it uses less digits than its factorization.

20135912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37640 (or 37636 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 20135912 is about 4487.3056503875. The cubic root of 20135912 is about 272.0552439693.

The spelling of 20135912 in words is "twenty million, one hundred thirty-five thousand, nine hundred twelve".