22240386 has 64 divisors (see below), whose sum is σ = 59823360. Its totient is φ = 5978880.

The previous prime is 22240381. The next prime is 22240391. The reversal of 22240386 is 68304222.

It is an interprime number because it is at equal distance from previous prime (22240381) and next prime (22240391).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (22240381) 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 31 ways as a sum of consecutive naturals, for example, 4696 + ... + 8156.

It is an arithmetic number, because the mean of its divisors is an integer number (934740).

Almost surely, 2^22240386 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22240386, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29911680).

22240386 is an abundant number, since it is smaller than the sum of its proper divisors (37582974).

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

22240386 is a wasteful number, since it uses less digits than its factorization.

22240386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496 (or 3490 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 22240386 is about 4715.9713739589. The cubic root of 22240386 is about 281.2208005242.

The spelling of 22240386 in words is "twenty-two million, two hundred forty thousand, three hundred eighty-six".