22400420452 has 12 divisors (see below), whose sum is σ = 40905115776. Its totient is φ = 10713244520.

The previous prime is 22400420431. The next prime is 22400420459. The reversal of 22400420452 is 25402400422.

It is not an unprimeable number, because it can be changed into a prime (22400420459) 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, 121741324 + ... + 121741507.

It is an arithmetic number, because the mean of its divisors is an integer number (3408759648).

Almost surely, 2^22400420452 is an apocalyptic number.

It is an amenable number.

22400420452 is a deficient number, since it is larger than the sum of its proper divisors (18504695324).

22400420452 is a wasteful number, since it uses less digits than its factorization.

22400420452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243482858 (or 243482856 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

Adding to 22400420452 its reverse (25402400422), we get a palindrome (47802820874).

The spelling of 22400420452 in words is "twenty-two billion, four hundred million, four hundred twenty thousand, four hundred fifty-two".