20442294 has 40 divisors (see below), whose sum is σ = 46077768. Its totient is φ = 6773760.

The previous prime is 20442293. The next prime is 20442349. The reversal of 20442294 is 49224402.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20442293) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 41389 + ... + 41879.

Almost surely, 2^20442294 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20442294, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23038884).

20442294 is an abundant number, since it is smaller than the sum of its proper divisors (25635474).

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

20442294 is a wasteful number, since it uses less digits than its factorization.

20442294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 753 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 20442294 is about 4521.3155165283. The cubic root of 20442294 is about 273.4281411480.

Adding to 20442294 its reverse (49224402), we get a palindrome (69666696).

It can be divided in two parts, 20442 and 294, that added together give a 4-th power (20736 = 12⁴).

The spelling of 20442294 in words is "twenty million, four hundred forty-two thousand, two hundred ninety-four".