222536 has 8 divisors (see below), whose sum is σ = 417270. Its totient is φ = 111264.

The previous prime is 222533. The next prime is 222553. The reversal of 222536 is 635222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 184900 + 37636 = 430^2 + 194^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a d-powerful number, because it can be written as 2³ + 2¹³ + 5⁵ + 2¹⁵ + 3¹¹ + 6⁴ .

It is not an unprimeable number, because it can be changed into a prime (222533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13901 + ... + 13916.

2²²²⁵³⁶ is an apocalyptic number.

It is an amenable number.

222536 is a deficient number, since it is larger than the sum of its proper divisors (194734).

222536 is a wasteful number, since it uses less digits than its factorization.

222536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27823 (or 27819 counting only the distinct ones).

The product of its digits is 720, while the sum is 20.

The square root of 222536 is about 471.7372149831. The cubic root of 222536 is about 60.5991816233.

Adding to 222536 its reverse (635222), we get a palindrome (857758).

Subtracting 222536 from its reverse (635222), we obtain a triangular number (412686 = T₉₀₈).

The spelling of 222536 in words is "two hundred twenty-two thousand, five hundred thirty-six".