20149212 has 12 divisors (see below), whose sum is σ = 47014856. Its totient is φ = 6716400.

The previous prime is 20149211. The next prime is 20149237. The reversal of 20149212 is 21294102.

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 (20149211) 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, 839539 + ... + 839562.

Almost surely, 2^20149212 is an apocalyptic number.

It is an amenable number.

20149212 is an abundant number, since it is smaller than the sum of its proper divisors (26865644).

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

20149212 is a wasteful number, since it uses less digits than its factorization.

20149212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679108 (or 1679106 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 20149212 is about 4488.7873640884. The cubic root of 20149212 is about 272.1151293189.

The spelling of 20149212 in words is "twenty million, one hundred forty-nine thousand, two hundred twelve".