20404334 has 8 divisors (see below), whose sum is σ = 30627840. Its totient is φ = 10195056.

The previous prime is 20404331. The next prime is 20404337. The reversal of 20404334 is 43340402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20404331) and next prime (20404337).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20404331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1427 + ... + 6545.

It is an arithmetic number, because the mean of its divisors is an integer number (3828480).

Almost surely, 2^20404334 is an apocalyptic number.

20404334 is a deficient number, since it is larger than the sum of its proper divisors (10223506).

20404334 is a wasteful number, since it uses less digits than its factorization.

20404334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7114.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 20404334 is about 4517.1156726389. The cubic root of 20404334 is about 273.2587902351.

Adding to 20404334 its reverse (43340402), we get a palindrome (63744736).

The spelling of 20404334 in words is "twenty million, four hundred four thousand, three hundred thirty-four".