22400422 has 8 divisors (see below), whose sum is σ = 36655272. Its totient is φ = 10182000.

The previous prime is 22400419. The next prime is 22400423.

22400422 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 22400396 and 22400405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22400423) 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, 509079 + ... + 509122.

It is an arithmetic number, because the mean of its divisors is an integer number (4581909).

Almost surely, 2^22400422 is an apocalyptic number.

22400422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22400422 is a deficient number, since it is larger than the sum of its proper divisors (14254850).

22400422 is a wasteful number, since it uses less digits than its factorization.

22400422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018214.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 22400422 is about 4732.9084081567. The cubic root of 22400422 is about 281.8937194858.

It can be divided in two parts, 22400 and 422, that added together give a palindrome (22822).

The spelling of 22400422 in words is "twenty-two million, four hundred thousand, four hundred twenty-two".