20029212 has 36 divisors (see below), whose sum is σ = 57862896. Its totient is φ = 5722560.

The previous prime is 20029199. The next prime is 20029241. The reversal of 20029212 is 21292002.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 39489 + ... + 39992.

Almost surely, 2^20029212 is an apocalyptic number.

It is an amenable number.

20029212 is an abundant number, since it is smaller than the sum of its proper divisors (37833684).

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

20029212 is a wasteful number, since it uses less digits than its factorization.

20029212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79498 (or 79493 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 20029212 is about 4475.4007641774. The cubic root of 20029212 is about 271.5738533150.

The spelling of 20029212 in words is "twenty million, twenty-nine thousand, two hundred twelve".