22623240 has 32 divisors (see below), whose sum is σ = 67870080. Its totient is φ = 6032832.

The previous prime is 22623197. The next prime is 22623241. The reversal of 22623240 is 4232622.

It is not an unprimeable number, because it can be changed into a prime (22623241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94144 + ... + 94383.

It is an arithmetic number, because the mean of its divisors is an integer number (2120940).

Almost surely, 2^22623240 is an apocalyptic number.

22623240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22623240 is an abundant number, since it is smaller than the sum of its proper divisors (45246840).

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

22623240 is a wasteful number, since it uses less digits than its factorization.

22623240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188541 (or 188537 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 22623240 is about 4756.3893869195. The cubic root of 22623240 is about 282.8253072454.

Adding to 22623240 its reverse (4232622), we get a palindrome (26855862).

The spelling of 22623240 in words is "twenty-two million, six hundred twenty-three thousand, two hundred forty".