20356912 has 20 divisors (see below), whose sum is σ = 39919320. Its totient is φ = 10055168.

The previous prime is 20356901. The next prime is 20356933. The reversal of 20356912 is 21965302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6337 + ... + 8992.

It is an arithmetic number, because the mean of its divisors is an integer number (1995966).

Almost surely, 2^20356912 is an apocalyptic number.

It is an amenable number.

20356912 is a deficient number, since it is larger than the sum of its proper divisors (19562408).

20356912 is a wasteful number, since it uses less digits than its factorization.

20356912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15420 (or 15414 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 20356912 is about 4511.8634731117. The cubic root of 20356912 is about 273.0469311544.

The spelling of 20356912 in words is "twenty million, three hundred fifty-six thousand, nine hundred twelve".