22380247 has 4 divisors (see below), whose sum is σ = 22530600. Its totient is φ = 22229896.

The previous prime is 22380223. The next prime is 22380263. The reversal of 22380247 is 74208322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22380247 - 2¹⁹ = 21855959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22380217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74953 + ... + 75250.

It is an arithmetic number, because the mean of its divisors is an integer number (5632650).

Almost surely, 2^22380247 is an apocalyptic number.

22380247 is a deficient number, since it is larger than the sum of its proper divisors (150353).

22380247 is a wasteful number, since it uses less digits than its factorization.

22380247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150352.

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

The square root of 22380247 is about 4730.7765747285. The cubic root of 22380247 is about 281.8090646216.

Adding to 22380247 its reverse (74208322), we get a palindrome (96588569).

The spelling of 22380247 in words is "twenty-two million, three hundred eighty thousand, two hundred forty-seven".