22194648 has 144 divisors (see below), whose sum is σ = 72825480. Its totient is φ = 6314112.

The previous prime is 22194643. The next prime is 22194661. The reversal of 22194648 is 84649122.

22194648 is a `hidden beast` number, since 2 + 2 + 1 + 9 + 4 + 648 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22194643) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 95140 + ... + 95372.

Almost surely, 2^22194648 is an apocalyptic number.

22194648 is a gapful number since it is divisible by the number (28) 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 22194648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36412740).

22194648 is an abundant number, since it is smaller than the sum of its proper divisors (50630832).

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

22194648 is a wasteful number, since it uses less digits than its factorization.

22194648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 245 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 22194648 is about 4711.1196121517. The cubic root of 22194648 is about 281.0278886383.

The spelling of 22194648 in words is "twenty-two million, one hundred ninety-four thousand, six hundred forty-eight".