22230740 has 24 divisors (see below), whose sum is σ = 53354112. Its totient is φ = 7621920.

The previous prime is 22230737. The next prime is 22230823. The reversal of 22230740 is 4703222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 79256 + ... + 79535.

It is an arithmetic number, because the mean of its divisors is an integer number (2223088).

Almost surely, 2^22230740 is an apocalyptic number.

22230740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22230740 is an abundant number, since it is smaller than the sum of its proper divisors (31123372).

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

22230740 is a wasteful number, since it uses less digits than its factorization.

22230740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158807 (or 158805 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 22230740 is about 4714.9485681182. The cubic root of 22230740 is about 281.1801380388.

Adding to 22230740 its reverse (4703222), we get a palindrome (26933962).

The spelling of 22230740 in words is "twenty-two million, two hundred thirty thousand, seven hundred forty".