22307445 has 24 divisors (see below), whose sum is σ = 39916032. Its totient is φ = 11512800.

The previous prime is 22307429. The next prime is 22307459. The reversal of 22307445 is 54470322.

It is not a de Polignac number, because 22307445 - 2⁴ = 22307429 is a prime.

It is a super-3 number, since 3×22307445³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6601 + ... + 9390.

It is an arithmetic number, because the mean of its divisors is an integer number (1663168).

Almost surely, 2^22307445 is an apocalyptic number.

It is an amenable number.

22307445 is a deficient number, since it is larger than the sum of its proper divisors (17608587).

22307445 is a wasteful number, since it uses less digits than its factorization.

22307445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16033 (or 16030 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 22307445 is about 4723.0757986719. The cubic root of 22307445 is about 281.5031616827.

Adding to 22307445 its reverse (54470322), we get a palindrome (76777767).

The spelling of 22307445 in words is "twenty-two million, three hundred seven thousand, four hundred forty-five".