20004315 has 8 divisors (see below), whose sum is σ = 32006928. Its totient is φ = 10668960.

The previous prime is 20004311. The next prime is 20004323. The reversal of 20004315 is 51340002.

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

It is not a de Polignac number, because 20004315 - 2² = 20004311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 1333621 = 20004315 / (2 + 0 + 0 + 0 + 4 + 3 + 1 + 5).

It is a junction number, because it is equal to n+sod(n) for n = 20004294 and 20004303.

It is not an unprimeable number, because it can be changed into a prime (20004311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666796 + ... + 666825.

It is an arithmetic number, because the mean of its divisors is an integer number (4000866).

Almost surely, 2^20004315 is an apocalyptic number.

20004315 is a deficient number, since it is larger than the sum of its proper divisors (12002613).

20004315 is a wasteful number, since it uses less digits than its factorization.

20004315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333629.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 20004315 is about 4472.6183606474. The cubic root of 20004315 is about 271.4612814425.

Adding to 20004315 its reverse (51340002), we get a palindrome (71344317).

The spelling of 20004315 in words is "twenty million, four thousand, three hundred fifteen".