22454460 has 144 divisors (see below), whose sum is σ = 79252992. Its totient is φ = 5040000.

The previous prime is 22454459. The next prime is 22454461. The reversal of 22454460 is 6445422.

It is an interprime number because it is at equal distance from previous prime (22454459) and next prime (22454461).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22454461) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 89335 + ... + 89585.

It is an arithmetic number, because the mean of its divisors is an integer number (550368).

Almost surely, 2^22454460 is an apocalyptic number.

22454460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22454460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39626496).

22454460 is an abundant number, since it is smaller than the sum of its proper divisors (56798532).

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

22454460 is a wasteful number, since it uses less digits than its factorization.

22454460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 22454460 is about 4738.6137213324. The cubic root of 22454460 is about 282.1202143265.

Adding to 22454460 its reverse (6445422), we get a palindrome (28899882).

The spelling of 22454460 in words is "twenty-two million, four hundred fifty-four thousand, four hundred sixty".