22400213 has 16 divisors (see below), whose sum is σ = 25056000. Its totient is φ = 19855680.

The previous prime is 22400173. The next prime is 22400219. The reversal of 22400213 is 31200422.

It is a cyclic number.

It is not a de Polignac number, because 22400213 - 2⁶ = 22400149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22400219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129395 + ... + 129567.

It is an arithmetic number, because the mean of its divisors is an integer number (1566000).

Almost surely, 2^22400213 is an apocalyptic number.

It is an amenable number.

22400213 is a deficient number, since it is larger than the sum of its proper divisors (2655787).

22400213 is a wasteful number, since it uses less digits than its factorization.

22400213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 22400213 is about 4732.8863286582. The cubic root of 22400213 is about 281.8928427766.

Adding to 22400213 its reverse (31200422), we get a palindrome (53600635).

The spelling of 22400213 in words is "twenty-two million, four hundred thousand, two hundred thirteen".