22141240 has 32 divisors (see below), whose sum is σ = 54347760. Its totient is φ = 8051200.

The previous prime is 22141211. The next prime is 22141241. The reversal of 22141240 is 4214122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22141241) 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, 24721 + ... + 25600.

Almost surely, 2^22141240 is an apocalyptic number.

22141240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22141240 is an abundant number, since it is smaller than the sum of its proper divisors (32206520).

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

22141240 is a wasteful number, since it uses less digits than its factorization.

22141240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50343 (or 50339 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 22141240 is about 4705.4479064166. The cubic root of 22141240 is about 280.8022908177.

Adding to 22141240 its reverse (4214122), we get a palindrome (26355362).

The spelling of 22141240 in words is "twenty-two million, one hundred forty-one thousand, two hundred forty".