22283646 has 64 divisors (see below), whose sum is σ = 56125440. Its totient is φ = 5729760.

The previous prime is 22283641. The next prime is 22283647. The reversal of 22283646 is 64638222.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22283641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64045 + ... + 64391.

It is an arithmetic number, because the mean of its divisors is an integer number (876960).

Almost surely, 2^22283646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22283646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28062720).

22283646 is an abundant number, since it is smaller than the sum of its proper divisors (33841794).

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

22283646 is a wasteful number, since it uses less digits than its factorization.

22283646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509.

The product of its digits is 27648, while the sum is 33.

The square root of 22283646 is about 4720.5556876283. Note that the first 3 decimals coincide. The cubic root of 22283646 is about 281.4030175733.

The spelling of 22283646 in words is "twenty-two million, two hundred eighty-three thousand, six hundred forty-six".