20212992 has 108 divisors (see below), whose sum is σ = 60371584. Its totient is φ = 6497280.

The previous prime is 20212991. The next prime is 20213047. The reversal of 20212992 is 29921202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212991) 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, 71283 + ... + 71565.

Almost surely, 2^20212992 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 20212992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30185792).

20212992 is an abundant number, since it is smaller than the sum of its proper divisors (40158592).

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

20212992 is a wasteful number, since it uses less digits than its factorization.

20212992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336 (or 319 counting only the distinct ones).

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

The square root of 20212992 is about 4495.8861195542. The cubic root of 20212992 is about 272.4019432285.

The spelling of 20212992 in words is "twenty million, two hundred twelve thousand, nine hundred ninety-two".