22405214 has 8 divisors (see below), whose sum is σ = 36193080. Its totient is φ = 10340856.

The previous prime is 22405181. The next prime is 22405217. The reversal of 22405214 is 41250422.

It is a happy number.

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

It is a super-2 number, since 2×22405214² = 1003987228771592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22405217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430844 + ... + 430895.

It is an arithmetic number, because the mean of its divisors is an integer number (4524135).

Almost surely, 2^22405214 is an apocalyptic number.

22405214 is a deficient number, since it is larger than the sum of its proper divisors (13787866).

22405214 is a wasteful number, since it uses less digits than its factorization.

22405214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861754.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 22405214 is about 4733.4146237151. The cubic root of 22405214 is about 281.9138193808.

Adding to 22405214 its reverse (41250422), we get a palindrome (63655636).

The spelling of 22405214 in words is "twenty-two million, four hundred five thousand, two hundred fourteen".