22541240 has 32 divisors (see below), whose sum is σ = 51176880. Its totient is φ = 8934912.

The previous prime is 22541231. The next prime is 22541249. The reversal of 22541240 is 4214522.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22541231) and next prime (22541249).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22541249) 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, 2027 + ... + 7013.

Almost surely, 2^22541240 is an apocalyptic number.

22541240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22541240 is an abundant number, since it is smaller than the sum of its proper divisors (28635640).

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

22541240 is a wasteful number, since it uses less digits than its factorization.

22541240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111 (or 5107 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 22541240 is about 4747.7615778386. The cubic root of 22541240 is about 282.4831848398.

Adding to 22541240 its reverse (4214522), we get a palindrome (26755762).

The spelling of 22541240 in words is "twenty-two million, five hundred forty-one thousand, two hundred forty".