22454620 has 48 divisors (see below), whose sum is σ = 50325408. Its totient is φ = 8386560.

The previous prime is 22454617. The next prime is 22454639. The reversal of 22454620 is 2645422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71584 + ... + 71896.

It is an arithmetic number, because the mean of its divisors is an integer number (1048446).

Almost surely, 2^22454620 is an apocalyptic number.

22454620 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 22454620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25162704).

22454620 is an abundant number, since it is smaller than the sum of its proper divisors (27870788).

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

22454620 is a wasteful number, since it uses less digits than its factorization.

22454620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 22454620 is about 4738.6306038770. The cubic root of 22454620 is about 282.1208844106.

The spelling of 22454620 in words is "twenty-two million, four hundred fifty-four thousand, six hundred twenty".