20212192 has 96 divisors (see below), whose sum is σ = 53512704. Its totient is φ = 7257600.

The previous prime is 20212187. The next prime is 20212223. The reversal of 20212192 is 29121202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31717 + ... + 32347.

It is an arithmetic number, because the mean of its divisors is an integer number (557424).

Almost surely, 2^20212192 is an apocalyptic number.

20212192 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20212192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26756352).

20212192 is an abundant number, since it is smaller than the sum of its proper divisors (33300512).

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

20212192 is a wasteful number, since it uses less digits than its factorization.

20212192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 20212192 is about 4495.7971484488. The cubic root of 20212192 is about 272.3983494272.

Adding to 20212192 its reverse (29121202), we get a palindrome (49333394).

It can be divided in two parts, 20 and 212192, that added together give a palindrome (212212).

The spelling of 20212192 in words is "twenty million, two hundred twelve thousand, one hundred ninety-two".