20371347 has 6 divisors (see below), whose sum is σ = 29425292. Its totient is φ = 13580892.

The previous prime is 20371339. The next prime is 20371357. The reversal of 20371347 is 74317302.

It is not a de Polignac number, because 20371347 - 2³ = 20371339 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20371347.

It is not an unprimeable number, because it can be changed into a prime (20371327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1131733 + ... + 1131750.

Almost surely, 2^20371347 is an apocalyptic number.

20371347 is a deficient number, since it is larger than the sum of its proper divisors (9053945).

20371347 is a wasteful number, since it uses less digits than its factorization.

20371347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263489 (or 2263486 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 20371347 is about 4513.4628612630. The cubic root of 20371347 is about 273.1114547128. Note that the first 3 decimals are identical.

Adding to 20371347 its reverse (74317302), we get a palindrome (94688649).

The spelling of 20371347 in words is "twenty million, three hundred seventy-one thousand, three hundred forty-seven".