223904372 has 6 divisors (see below), whose sum is σ = 391832658. Its totient is φ = 111952184.

The previous prime is 223904357. The next prime is 223904377. The reversal of 223904372 is 273409322.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 130279396 + 93624976 = 11414^2 + 9676^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223904377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27988043 + ... + 27988050.

It is an arithmetic number, because the mean of its divisors is an integer number (65305443).

Almost surely, 2^223904372 is an apocalyptic number.

It is an amenable number.

223904372 is a deficient number, since it is larger than the sum of its proper divisors (167928286).

223904372 is a wasteful number, since it uses less digits than its factorization.

223904372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55976097 (or 55976095 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 223904372 is about 14963.4344988041. The cubic root of 223904372 is about 607.2313585827.

It can be divided in two parts, 22390 and 4372, that added together give a palindrome (26762).

The spelling of 223904372 in words is "two hundred twenty-three million, nine hundred four thousand, three hundred seventy-two".