20486347 has 12 divisors (see below), whose sum is σ = 24011728. Its totient is φ = 17121600.

The previous prime is 20486339. The next prime is 20486387. The reversal of 20486347 is 74368402.

It is not a de Polignac number, because 20486347 - 2³ = 20486339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20486387) 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, 10897 + ... + 12637.

Almost surely, 2^20486347 is an apocalyptic number.

20486347 is a deficient number, since it is larger than the sum of its proper divisors (3525381).

20486347 is an equidigital number, since it uses as much as digits as its factorization.

20486347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830 (or 1789 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 20486347 is about 4526.1845963239. The cubic root of 20486347 is about 273.6244121358.

The spelling of 20486347 in words is "twenty million, four hundred eighty-six thousand, three hundred forty-seven".