20306350 has 24 divisors (see below), whose sum is σ = 38577888. Its totient is φ = 7948800.

The previous prime is 20306339. The next prime is 20306359. The reversal of 20306350 is 5360302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20306359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1971 + ... + 6670.

It is an arithmetic number, because the mean of its divisors is an integer number (1607412).

Almost surely, 2^20306350 is an apocalyptic number.

20306350 is a deficient number, since it is larger than the sum of its proper divisors (18271538).

20306350 is a wasteful number, since it uses less digits than its factorization.

20306350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8700 (or 8695 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 20306350 is about 4506.2567614374. The cubic root of 20306350 is about 272.8206813037.

Adding to 20306350 its reverse (5360302), we get a palindrome (25666652).

The spelling of 20306350 in words is "twenty million, three hundred six thousand, three hundred fifty".