20200347 has 24 divisors (see below), whose sum is σ = 30606576. Its totient is φ = 13312512.

The previous prime is 20200343. The next prime is 20200387. The reversal of 20200347 is 74300202.

It is a happy number.

It is not a de Polignac number, because 20200347 - 2² = 20200343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23143 + ... + 23999.

It is an arithmetic number, because the mean of its divisors is an integer number (1275274).

Almost surely, 2^20200347 is an apocalyptic number.

20200347 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20200347 is a deficient number, since it is larger than the sum of its proper divisors (10406229).

20200347 is an frugal number, since it uses more digits than its factorization.

20200347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 957 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 20200347 is about 4494.4796139264. The cubic root of 20200347 is about 272.3451276070.

Adding to 20200347 its reverse (74300202), we get a palindrome (94500549).

The spelling of 20200347 in words is "twenty million, two hundred thousand, three hundred forty-seven".