20448347 has 2 divisors, whose sum is σ = 20448348. Its totient is φ = 20448346.

The previous prime is 20448343. The next prime is 20448353. The reversal of 20448347 is 74384402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20448347 - 2² = 20448343 is a prime.

It is not a weakly prime, because it can be changed into another prime (20448341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10224173 + 10224174.

It is an arithmetic number, because the mean of its divisors is an integer number (10224174).

Almost surely, 2^20448347 is an apocalyptic number.

20448347 is a deficient number, since it is larger than the sum of its proper divisors (1).

20448347 is an equidigital number, since it uses as much as digits as its factorization.

20448347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 20448347 is about 4521.9848518101. The cubic root of 20448347 is about 273.4551260061.

The spelling of 20448347 in words is "twenty million, four hundred forty-eight thousand, three hundred forty-seven".