20945232 has 120 divisors (see below), whose sum is σ = 73120320. Its totient is φ = 5437440.

The previous prime is 20945231. The next prime is 20945261. The reversal of 20945232 is 23254902.

20945232 is a `hidden beast` number, since 209 + 452 + 3 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20945196 and 20945205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20945231) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 10144 + ... + 12032.

It is an arithmetic number, because the mean of its divisors is an integer number (609336).

Almost surely, 2^20945232 is an apocalyptic number.

20945232 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 20945232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36560160).

20945232 is an abundant number, since it is smaller than the sum of its proper divisors (52175088).

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

20945232 is a wasteful number, since it uses less digits than its factorization.

20945232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921 (or 1912 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 20945232 is about 4576.5961150182. The cubic root of 20945232 is about 275.6523663574.

The spelling of 20945232 in words is "twenty million, nine hundred forty-five thousand, two hundred thirty-two".