20442104 has 8 divisors (see below), whose sum is σ = 38328960. Its totient is φ = 10221048.

The previous prime is 20442091. The next prime is 20442127. The reversal of 20442104 is 40124402.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277624 + ... + 1277639.

It is an arithmetic number, because the mean of its divisors is an integer number (4791120).

Almost surely, 2^20442104 is an apocalyptic number.

It is an amenable number.

20442104 is a deficient number, since it is larger than the sum of its proper divisors (17886856).

20442104 is a wasteful number, since it uses less digits than its factorization.

20442104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555269 (or 2555265 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 20442104 is about 4521.2945048957. The cubic root of 20442104 is about 273.4272940234.

Adding to 20442104 its reverse (40124402), we get a palindrome (60566506).

The spelling of 20442104 in words is "twenty million, four hundred forty-two thousand, one hundred four".