222523340 has 48 divisors (see below), whose sum is σ = 505491840. Its totient is φ = 81795840.

The previous prime is 222523331. The next prime is 222523349. The reversal of 222523340 is 43325222.

It is an interprime number because it is at equal distance from previous prime (222523331) and next prime (222523349).

It is not an unprimeable number, because it can be changed into a prime (222523349) 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, 60350 + ... + 63930.

It is an arithmetic number, because the mean of its divisors is an integer number (10531080).

Almost surely, 2^222523340 is an apocalyptic number.

222523340 is a gapful number since it is divisible by the number (20) 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 222523340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252745920).

222523340 is an abundant number, since it is smaller than the sum of its proper divisors (282968500).

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

222523340 is a wasteful number, since it uses less digits than its factorization.

222523340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3842 (or 3840 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 222523340 is about 14917.2162282378. The cubic root of 222523340 is about 605.9803244564.

Adding to 222523340 its reverse (43325222), we get a palindrome (265848562).

The spelling of 222523340 in words is "two hundred twenty-two million, five hundred twenty-three thousand, three hundred forty".