223575138 has 12 divisors (see below), whose sum is σ = 484412838. Its totient is φ = 74525040.

The previous prime is 223575119. The next prime is 223575139. The reversal of 223575138 is 831575322.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 206410689 + 17164449 = 14367^2 + 4143^2 .

It is not an unprimeable number, because it can be changed into a prime (223575139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6210403 + ... + 6210438.

Almost surely, 2^223575138 is an apocalyptic number.

223575138 is an abundant number, since it is smaller than the sum of its proper divisors (260837700).

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

223575138 is a wasteful number, since it uses less digits than its factorization.

223575138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12420849 (or 12420846 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 223575138 is about 14952.4291671955. The cubic root of 223575138 is about 606.9335837232.

It can be divided in two parts, 22357 and 5138, that added together give a triangular number (27495 = T₂₃₄).

The spelling of 223575138 in words is "two hundred twenty-three million, five hundred seventy-five thousand, one hundred thirty-eight".