22315447 has 16 divisors (see below), whose sum is σ = 28283904. Its totient is φ = 17100000.

The previous prime is 22315429. The next prime is 22315453. The reversal of 22315447 is 74451322.

It is a cyclic number.

It is not a de Polignac number, because 22315447 - 2¹⁵ = 22282679 is a prime.

It is a super-3 number, since 3×22315447³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22315427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2322 + ... + 7072.

It is an arithmetic number, because the mean of its divisors is an integer number (1767744).

Almost surely, 2^22315447 is an apocalyptic number.

22315447 is a deficient number, since it is larger than the sum of its proper divisors (5968457).

22315447 is a wasteful number, since it uses less digits than its factorization.

22315447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4830.

The product of its digits is 6720, while the sum is 28.

The square root of 22315447 is about 4723.9228401827. The cubic root of 22315447 is about 281.5368173973.

Adding to 22315447 its reverse (74451322), we get a palindrome (96766769).

The spelling of 22315447 in words is "twenty-two million, three hundred fifteen thousand, four hundred forty-seven".