20308346 has 8 divisors (see below), whose sum is σ = 30481920. Its totient is φ = 10147708.

The previous prime is 20308339. The next prime is 20308349. The reversal of 20308346 is 64380302.

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

It is not an unprimeable number, because it can be changed into a prime (20308349) 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, 3485 + ... + 7263.

It is an arithmetic number, because the mean of its divisors is an integer number (3810240).

Almost surely, 2^20308346 is an apocalyptic number.

20308346 is a deficient number, since it is larger than the sum of its proper divisors (10173574).

20308346 is a wasteful number, since it uses less digits than its factorization.

20308346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6468.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 20308346 is about 4506.4782258433. The cubic root of 20308346 is about 272.8296199238.

Adding to 20308346 its reverse (64380302), we get a palindrome (84688648).

The spelling of 20308346 in words is "twenty million, three hundred eight thousand, three hundred forty-six".