20146212 has 48 divisors (see below), whose sum is σ = 52590720. Its totient is φ = 6669216.

The previous prime is 20146177. The next prime is 20146219. The reversal of 20146212 is 21264102.

20146212 is a `hidden beast` number, since 201 + 462 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20146219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17478 + ... + 18594.

It is an arithmetic number, because the mean of its divisors is an integer number (1095640).

Almost surely, 2^20146212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20146212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26295360).

20146212 is an abundant number, since it is smaller than the sum of its proper divisors (32444508).

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

20146212 is a wasteful number, since it uses less digits than its factorization.

20146212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297 (or 1289 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20146212 is about 4488.4531856754. The cubic root of 20146212 is about 272.1016236475.

The spelling of 20146212 in words is "twenty million, one hundred forty-six thousand, two hundred twelve".