22213408 has 48 divisors (see below), whose sum is σ = 50428224. Its totient is φ = 9434880.

The previous prime is 22213403. The next prime is 22213417. The reversal of 22213408 is 80431222.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28966 + ... + 29722.

It is an arithmetic number, because the mean of its divisors is an integer number (1050588).

Almost surely, 2^22213408 is an apocalyptic number.

22213408 is a gapful number since it is divisible by the number (28) 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 22213408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25214112).

22213408 is an abundant number, since it is smaller than the sum of its proper divisors (28214816).

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

22213408 is a wasteful number, since it uses less digits than its factorization.

22213408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 22213408 is about 4713.1102257427. The cubic root of 22213408 is about 281.1070458370.

It can be divided in two parts, 2 and 2213408, that multiplied together give a square (4426816 = 2104²).

The spelling of 22213408 in words is "twenty-two million, two hundred thirteen thousand, four hundred eight".