20166612 has 12 divisors (see below), whose sum is σ = 47055456. Its totient is φ = 6722200.

The previous prime is 20166583. The next prime is 20166617. The reversal of 20166612 is 21666102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20166617) 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, 840264 + ... + 840287.

It is an arithmetic number, because the mean of its divisors is an integer number (3921288).

Almost surely, 2^20166612 is an apocalyptic number.

It is an amenable number.

20166612 is an abundant number, since it is smaller than the sum of its proper divisors (26888844).

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

20166612 is a wasteful number, since it uses less digits than its factorization.

20166612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680558 (or 1680556 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 20166612 is about 4490.7251084875. The cubic root of 20166612 is about 272.1934357886.

The spelling of 20166612 in words is "twenty million, one hundred sixty-six thousand, six hundred twelve".