22213400 has 96 divisors (see below), whose sum is σ = 58924800. Its totient is φ = 7708800.

The previous prime is 22213397. The next prime is 22213403. The reversal of 22213400 is 431222.

It is an interprime number because it is at equal distance from previous prime (22213397) and next prime (22213403).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22213403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50381 + ... + 50819.

It is an arithmetic number, because the mean of its divisors is an integer number (613800).

Almost surely, 2^22213400 is an apocalyptic number.

22213400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22213400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29462400).

22213400 is an abundant number, since it is smaller than the sum of its proper divisors (36711400).

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

22213400 is a wasteful number, since it uses less digits than its factorization.

22213400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 480 counting only the distinct ones).

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

The square root of 22213400 is about 4713.1093770461. The cubic root of 22213400 is about 281.1070120907.

Adding to 22213400 its reverse (431222), we get a palindrome (22644622).

It can be divided in two parts, 2 and 2213400, that multiplied together give a triangular number (4426800 = T₂₉₇₅).

The spelling of 22213400 in words is "twenty-two million, two hundred thirteen thousand, four hundred".