22313718 has 72 divisors (see below), whose sum is σ = 58384872. Its totient is φ = 6368544.

The previous prime is 22313699. The next prime is 22313729. The reversal of 22313718 is 81731322.

It is a super-3 number, since 3×22313718³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 22313691 and 22313700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23346 + ... + 24282.

It is an arithmetic number, because the mean of its divisors is an integer number (810901).

Almost surely, 2^22313718 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22313718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29192436).

22313718 is an abundant number, since it is smaller than the sum of its proper divisors (36071154).

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

22313718 is an equidigital number, since it uses as much as digits as its factorization.

22313718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968 (or 949 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 22313718 is about 4723.7398319552. The cubic root of 22313718 is about 281.5295460555.

The spelling of 22313718 in words is "twenty-two million, three hundred thirteen thousand, seven hundred eighteen".