22233247 has 4 divisors (see below), whose sum is σ = 22305976. Its totient is φ = 22160520.

The previous prime is 22233217. The next prime is 22233257. The reversal of 22233247 is 74233222.

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 22233247 - 2¹¹ = 22231199 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 (22233217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35904 + ... + 36517.

It is an arithmetic number, because the mean of its divisors is an integer number (5576494).

Almost surely, 2^22233247 is an apocalyptic number.

22233247 is a deficient number, since it is larger than the sum of its proper divisors (72729).

22233247 is an equidigital number, since it uses as much as digits as its factorization.

22233247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72728.

The product of its digits is 4032, while the sum is 25.

The square root of 22233247 is about 4715.2144171819. The cubic root of 22233247 is about 281.1907073692.

Subtracting from 22233247 its sum of digits (25), we obtain a palindrome (22233222).

Adding to 22233247 its reverse (74233222), we get a palindrome (96466469).

The spelling of 22233247 in words is "twenty-two million, two hundred thirty-three thousand, two hundred forty-seven".