20932212 has 72 divisors (see below), whose sum is σ = 57558144. Its totient is φ = 5902848.

The previous prime is 20932199. The next prime is 20932237. The reversal of 20932212 is 21223902.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56853 + ... + 57219.

Almost surely, 2^20932212 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 20932212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28779072).

20932212 is an abundant number, since it is smaller than the sum of its proper divisors (36625932).

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

20932212 is a wasteful number, since it uses less digits than its factorization.

20932212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20932212 is about 4575.1734393354. The cubic root of 20932212 is about 275.5952374010.

The spelling of 20932212 in words is "twenty million, nine hundred thirty-two thousand, two hundred twelve".