22541420 has 24 divisors (see below), whose sum is σ = 51640848. Its totient is φ = 8196800.

The previous prime is 22541419. The next prime is 22541423. The reversal of 22541420 is 2414522.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 22541392 and 22541401.

It is not an unprimeable number, because it can be changed into a prime (22541423) 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, 51011 + ... + 51450.

It is an arithmetic number, because the mean of its divisors is an integer number (2151702).

Almost surely, 2^22541420 is an apocalyptic number.

22541420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22541420 is an abundant number, since it is smaller than the sum of its proper divisors (29099428).

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

22541420 is a wasteful number, since it uses less digits than its factorization.

22541420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102481 (or 102479 counting only the distinct ones).

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

The square root of 22541420 is about 4747.7805341022. The cubic root of 22541420 is about 282.4839367482.

Adding to 22541420 its reverse (2414522), we get a palindrome (24955942).

The spelling of 22541420 in words is "twenty-two million, five hundred forty-one thousand, four hundred twenty".