222332240 has 80 divisors (see below), whose sum is σ = 564713856. Its totient is φ = 80908800.

The previous prime is 222332221. The next prime is 222332261. The reversal of 222332240 is 42233222.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72335 + ... + 75345.

Almost surely, 2^222332240 is an apocalyptic number.

222332240 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 222332240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282356928).

222332240 is an abundant number, since it is smaller than the sum of its proper divisors (342381616).

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

222332240 is a wasteful number, since it uses less digits than its factorization.

222332240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3108 (or 3102 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 222332240 is about 14910.8095018346. The cubic root of 222332240 is about 605.8068055710.

Adding to 222332240 its reverse (42233222), we get a palindrome (264565462).

The spelling of 222332240 in words is "two hundred twenty-two million, three hundred thirty-two thousand, two hundred forty".