20299212 has 36 divisors (see below), whose sum is σ = 52284960. Its totient is φ = 6638112.

The previous prime is 20299211. The next prime is 20299219. The reversal of 20299212 is 21299202.

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

It is not an unprimeable number, because it can be changed into a prime (20299211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3412 + ... + 7227.

It is an arithmetic number, because the mean of its divisors is an integer number (1452360).

Almost surely, 2^20299212 is an apocalyptic number.

It is an amenable number.

20299212 is an abundant number, since it is smaller than the sum of its proper divisors (31985748).

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

20299212 is a wasteful number, since it uses less digits than its factorization.

20299212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10702 (or 10697 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 20299212 is about 4505.4646819168. The cubic root of 20299212 is about 272.7887106435.

The spelling of 20299212 in words is "twenty million, two hundred ninety-nine thousand, two hundred twelve".