223153938 has 54 divisors (see below), whose sum is σ = 563559399. Its totient is φ = 63631512.

The previous prime is 223153937. The next prime is 223153963. The reversal of 223153938 is 839351322.

It can be written as a sum of positive squares in only one way, i.e., 111576969 + 111576969 = 10563^2 + 10563^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=10563.

It is a super-3 number, since 3×223153938³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (223153933) 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 26 ways as a sum of consecutive naturals, for example, 443395 + ... + 443897.

Almost surely, 2^223153938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223153938

223153938 is an abundant number, since it is smaller than the sum of its proper divisors (340405461).

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

223153938 is an equidigital number, since it uses as much as digits as its factorization.

223153938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028 (or 515 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 223153938 is about 14938.3378593470. The cubic root of 223153938 is about 606.5522039146.

It can be divided in two parts, 2231 and 53938, that added together give a square (56169 = 237²).

The spelling of 223153938 in words is "two hundred twenty-three million, one hundred fifty-three thousand, nine hundred thirty-eight".