223449400 has 24 divisors (see below), whose sum is σ = 519520320. Its totient is φ = 89379680.

The previous prime is 223449397. The next prime is 223449403. The reversal of 223449400 is 4944322.

It is an interprime number because it is at equal distance from previous prime (223449397) and next prime (223449403).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223449403) 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, 558424 + ... + 558823.

It is an arithmetic number, because the mean of its divisors is an integer number (21646680).

Almost surely, 2^223449400 is an apocalyptic number.

223449400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223449400 is an abundant number, since it is smaller than the sum of its proper divisors (296070920).

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

223449400 is a wasteful number, since it uses less digits than its factorization.

223449400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117263 (or 1117254 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 223449400 is about 14948.2239747737. The cubic root of 223449400 is about 606.8197831660.

The spelling of 223449400 in words is "two hundred twenty-three million, four hundred forty-nine thousand, four hundred".