22462272 has 140 divisors (see below), whose sum is σ = 76220320. Its totient is φ = 6407424.

The previous prime is 22462229. The next prime is 22462273. The reversal of 22462272 is 27226422.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22462273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 35979 + ... + 36597.

Almost surely, 2^22462272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22462272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38110160).

22462272 is an abundant number, since it is smaller than the sum of its proper divisors (53758048).

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

22462272 is an equidigital number, since it uses as much as digits as its factorization.

22462272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 631 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 22462272 is about 4739.4379413597. The cubic root of 22462272 is about 282.1529274650.

Adding to 22462272 its reverse (27226422), we get a palindrome (49688694).

The spelling of 22462272 in words is "twenty-two million, four hundred sixty-two thousand, two hundred seventy-two".