20332242 has 96 divisors (see below), whose sum is σ = 54864000. Its totient is φ = 5466528.

The previous prime is 20332241. The next prime is 20332243. The reversal of 20332242 is 24223302.

It is an interprime number because it is at equal distance from previous prime (20332241) and next prime (20332243).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20332241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 136384 + ... + 136532.

It is an arithmetic number, because the mean of its divisors is an integer number (571500).

Almost surely, 2^20332242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20332242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27432000).

20332242 is an abundant number, since it is smaller than the sum of its proper divisors (34531758).

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

20332242 is a wasteful number, since it uses less digits than its factorization.

20332242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 20332242 is about 4509.1287406771. The cubic root of 20332242 is about 272.9365871312.

Adding to 20332242 its reverse (24223302), we get a palindrome (44555544).

The spelling of 20332242 in words is "twenty million, three hundred thirty-two thousand, two hundred forty-two".