22223340 has 72 divisors (see below), whose sum is σ = 67795728. Its totient is φ = 5892480.

The previous prime is 22223329. The next prime is 22223351. The reversal of 22223340 is 4332222.

It is an interprime number because it is at equal distance from previous prime (22223329) and next prime (22223351).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 59394 + ... + 59766.

Almost surely, 2^22223340 is an apocalyptic number.

22223340 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 22223340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33897864).

22223340 is an abundant number, since it is smaller than the sum of its proper divisors (45572388).

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

22223340 is a wasteful number, since it uses less digits than its factorization.

22223340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 22223340 is about 4714.1637646565. The cubic root of 22223340 is about 281.1489355397.

Adding to 22223340 its reverse (4332222), we get a palindrome (26555562).

The spelling of 22223340 in words is "twenty-two million, two hundred twenty-three thousand, three hundred forty".