22747648 has 80 divisors (see below), whose sum is σ = 56764224. Its totient is φ = 8847360.

The previous prime is 22747643. The next prime is 22747651. The reversal of 22747648 is 84674722.

It is a self number, because there is not a number n which added to its sum of digits gives 22747648.

It is not an unprimeable number, because it can be changed into a prime (22747643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39136 + ... + 39712.

Almost surely, 2^22747648 is an apocalyptic number.

22747648 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 22747648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28382112).

22747648 is an abundant number, since it is smaller than the sum of its proper divisors (34016576).

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

22747648 is an equidigital number, since it uses as much as digits as its factorization.

22747648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613 (or 597 counting only the distinct ones).

The product of its digits is 150528, while the sum is 40.

The square root of 22747648 is about 4769.4494441183. The cubic root of 22747648 is about 283.3427903033.

The spelling of 22747648 in words is "twenty-two million, seven hundred forty-seven thousand, six hundred forty-eight".