40305224 has 8 divisors (see below), whose sum is σ = 75572310. Its totient is φ = 20152608.

The previous prime is 40305217. The next prime is 40305227. The reversal of 40305224 is 42250304.

It can be written as a sum of positive squares in only one way, i.e., 28622500 + 11682724 = 5350^2 + 3418^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×40305224² = 3249022163380352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40305196 and 40305205.

It is not an unprimeable number, because it can be changed into a prime (40305227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2519069 + ... + 2519084.

Almost surely, 2^40305224 is an apocalyptic number.

It is an amenable number.

40305224 is a deficient number, since it is larger than the sum of its proper divisors (35267086).

40305224 is a wasteful number, since it uses less digits than its factorization.

40305224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5038159 (or 5038155 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 40305224 is about 6348.6395393029. The cubic root of 40305224 is about 342.8628622723.

Adding to 40305224 its reverse (42250304), we get a palindrome (82555528).

The spelling of 40305224 in words is "forty million, three hundred five thousand, two hundred twenty-four".