22514420 has 18 divisors (see below), whose sum is σ = 47324886. Its totient is φ = 8997280.

The previous prime is 22514417. The next prime is 22514467. The reversal of 22514420 is 2441522.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 4857616 + 17656804 = 2204^2 + 4202^2 .

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 = 22514392 and 22514401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20690 + ... + 21750.

Almost surely, 2^22514420 is an apocalyptic number.

22514420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22514420 is an abundant number, since it is smaller than the sum of its proper divisors (24810466).

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

22514420 is an equidigital number, since it uses as much as digits as its factorization.

22514420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131 (or 1068 counting only the distinct ones).

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

The square root of 22514420 is about 4744.9362482546. The cubic root of 22514420 is about 282.3711057384.

Multiplying 22514420 by its sum of digits (20), we get a square (450288400 = 21220²).

22514420 divided by its sum of digits (20) gives a square (1125721 = 1061²).

Adding to 22514420 its reverse (2441522), we get a palindrome (24955942).

The spelling of 22514420 in words is "twenty-two million, five hundred fourteen thousand, four hundred twenty".