20061447 has 8 divisors (see below), whose sum is σ = 30569856. Its totient is φ = 11463672.

The previous prime is 20061439. The next prime is 20061449. The reversal of 20061447 is 74416002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20061447 - 2³ = 20061439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20061449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477633 + ... + 477674.

It is an arithmetic number, because the mean of its divisors is an integer number (3821232).

Almost surely, 2^20061447 is an apocalyptic number.

20061447 is a deficient number, since it is larger than the sum of its proper divisors (10508409).

20061447 is an equidigital number, since it uses as much as digits as its factorization.

20061447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955317.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 20061447 is about 4479.0006697923. Note that the first 3 decimals coincide. The cubic root of 20061447 is about 271.7194654844.

Adding to 20061447 its reverse (74416002), we get a palindrome (94477449).

It can be divided in two parts, 200614 and 47, that added together give a triangular number (200661 = T₆₃₃).

The spelling of 20061447 in words is "twenty million, sixty-one thousand, four hundred forty-seven".