22213340 has 12 divisors (see below), whose sum is σ = 46648056. Its totient is φ = 8885328.

The previous prime is 22213313. The next prime is 22213343. The reversal of 22213340 is 4331222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22213343) 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, 555314 + ... + 555353.

It is an arithmetic number, because the mean of its divisors is an integer number (3887338).

Almost surely, 2^22213340 is an apocalyptic number.

22213340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22213340 is an abundant number, since it is smaller than the sum of its proper divisors (24434716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22213340 is a wasteful number, since it uses less digits than its factorization.

22213340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110676 (or 1110674 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 22213340 is about 4713.1030118172. The cubic root of 22213340 is about 281.1067589937.

Adding to 22213340 its reverse (4331222), we get a palindrome (26544562).

The spelling of 22213340 in words is "twenty-two million, two hundred thirteen thousand, three hundred forty".