20222447 has 12 divisors (see below), whose sum is σ = 24284736. Its totient is φ = 16773120.

The previous prime is 20222437. The next prime is 20222459. The reversal of 20222447 is 74422202.

It is a happy number.

It is not a de Polignac number, because 20222447 - 2⁶ = 20222383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222407) 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, 5138 + ... + 8175.

It is an arithmetic number, because the mean of its divisors is an integer number (2023728).

Almost surely, 2^20222447 is an apocalyptic number.

20222447 is a deficient number, since it is larger than the sum of its proper divisors (4062289).

20222447 is a wasteful number, since it uses less digits than its factorization.

20222447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13358 (or 13351 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 20222447 is about 4496.9375134640. The cubic root of 20222447 is about 272.4444102861. Note that the first 4 decimals are identical.

Adding to 20222447 its reverse (74422202), we get a palindrome (94644649).

The spelling of 20222447 in words is "twenty million, two hundred twenty-two thousand, four hundred forty-seven".