22307712 has 128 divisors (see below), whose sum is σ = 69653760. Its totient is φ = 6193152.

The previous prime is 22307711. The next prime is 22307713. The reversal of 22307712 is 21770322.

It is an interprime number because it is at equal distance from previous prime (22307711) and next prime (22307713).

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-3 number, since 3×22307712³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22307711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115488 + ... + 115680.

It is an arithmetic number, because the mean of its divisors is an integer number (544170).

Almost surely, 2^22307712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22307712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34826880).

22307712 is an abundant number, since it is smaller than the sum of its proper divisors (47346048).

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

22307712 is a wasteful number, since it uses less digits than its factorization.

22307712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 22307712 is about 4723.1040640663. The cubic root of 22307712 is about 281.5042847912.

The spelling of 22307712 in words is "twenty-two million, three hundred seven thousand, seven hundred twelve".