223428139 has 8 divisors (see below), whose sum is σ = 244026432. Its totient is φ = 202877640.

The previous prime is 223428137. The next prime is 223428143. The reversal of 223428139 is 931824322.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 223428139 - 2¹ = 223428137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223428137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1789 + ... + 21214.

It is an arithmetic number, because the mean of its divisors is an integer number (30503304).

Almost surely, 2^223428139 is an apocalyptic number.

223428139 is a deficient number, since it is larger than the sum of its proper divisors (20598293).

223428139 is a wasteful number, since it uses less digits than its factorization.

223428139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23897.

The product of its digits is 20736, while the sum is 34.

The square root of 223428139 is about 14947.5128031389. The cubic root of 223428139 is about 606.8005364453.

The spelling of 223428139 in words is "two hundred twenty-three million, four hundred twenty-eight thousand, one hundred thirty-nine".