22107240 has 48 divisors (see below), whose sum is σ = 71849700. Its totient is φ = 5895168.

The previous prime is 22107223. The next prime is 22107269. The reversal of 22107240 is 4270122.

It can be written as a sum of positive squares in 2 ways, for example, as 20848356 + 1258884 = 4566^2 + 1122^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30345 + ... + 31064.

Almost surely, 2^22107240 is an apocalyptic number.

22107240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22107240 is an abundant number, since it is smaller than the sum of its proper divisors (49742460).

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

22107240 is a wasteful number, since it uses less digits than its factorization.

22107240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61426 (or 61419 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 22107240 is about 4701.8336848510. The cubic root of 22107240 is about 280.6584842230.

Adding to 22107240 its reverse (4270122), we get a palindrome (26377362).

The spelling of 22107240 in words is "twenty-two million, one hundred seven thousand, two hundred forty".