223643460 has 48 divisors (see below), whose sum is σ = 628149312. Its totient is φ = 59452800.

The previous prime is 223643423. The next prime is 223643477. The reversal of 223643460 is 64346322.

It is a happy number.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14230 + ... + 25490.

It is an arithmetic number, because the mean of its divisors is an integer number (13086444).

Almost surely, 2^223643460 is an apocalyptic number.

223643460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223643460 is an abundant number, since it is smaller than the sum of its proper divisors (404505852).

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

223643460 is a wasteful number, since it uses less digits than its factorization.

223643460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11604 (or 11602 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 223643460 is about 14954.7136381811. The cubic root of 223643460 is about 606.9954014092.

Adding to 223643460 its reverse (64346322), we get a palindrome (287989782).

The spelling of 223643460 in words is "two hundred twenty-three million, six hundred forty-three thousand, four hundred sixty".