223928765 has 8 divisors (see below), whose sum is σ = 269830968. Its totient is φ = 178398720.

The previous prime is 223928729. The next prime is 223928767. The reversal of 223928765 is 567829322.

It can be written as a sum of positive squares in 4 ways, for example, as 41705764 + 182223001 = 6458^2 + 13499^2 .

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

It is not a de Polignac number, because 223928765 - 2¹² = 223924669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223928767) 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, 91712 + ... + 94121.

It is an arithmetic number, because the mean of its divisors is an integer number (33728871).

Almost surely, 2^223928765 is an apocalyptic number.

It is an amenable number.

223928765 is a deficient number, since it is larger than the sum of its proper divisors (45902203).

223928765 is a wasteful number, since it uses less digits than its factorization.

223928765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186079.

The product of its digits is 362880, while the sum is 44.

The square root of 223928765 is about 14964.2495635431. The cubic root of 223928765 is about 607.2534091521.

The spelling of 223928765 in words is "two hundred twenty-three million, nine hundred twenty-eight thousand, seven hundred sixty-five".