222987240 has 144 divisors (see below), whose sum is σ = 843094980. Its totient is φ = 50964480.

The previous prime is 222987203. The next prime is 222987241. The reversal of 222987240 is 42789222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 179506404 + 43480836 = 13398^2 + 6594^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 222987195 and 222987204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222987241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11320 + ... + 23960.

Almost surely, 2^222987240 is an apocalyptic number.

222987240 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 222987240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421547490).

222987240 is an abundant number, since it is smaller than the sum of its proper divisors (620107740).

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

222987240 is a wasteful number, since it uses less digits than its factorization.

222987240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12672 (or 12658 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 222987240 is about 14932.7572805561. The cubic root of 222987240 is about 606.4011329729.

The spelling of 222987240 in words is "two hundred twenty-two million, nine hundred eighty-seven thousand, two hundred forty".