22280473 has 2 divisors, whose sum is σ = 22280474. Its totient is φ = 22280472.

The previous prime is 22280471. The next prime is 22280477. The reversal of 22280473 is 37408222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14197824 + 8082649 = 3768^2 + 2843^2 .

It is a cyclic number.

It is not a de Polignac number, because 22280473 - 2¹ = 22280471 is a prime.

Together with 22280471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22280471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11140236 + 11140237.

It is an arithmetic number, because the mean of its divisors is an integer number (11140237).

Almost surely, 2^22280473 is an apocalyptic number.

It is an amenable number.

22280473 is a deficient number, since it is larger than the sum of its proper divisors (1).

22280473 is an equidigital number, since it uses as much as digits as its factorization.

22280473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 22280473 is about 4720.2195923495. The cubic root of 22280473 is about 281.3896604809.

Adding to 22280473 its reverse (37408222), we get a palindrome (59688695).

The spelling of 22280473 in words is "twenty-two million, two hundred eighty thousand, four hundred seventy-three".