223712940 has 48 divisors (see below), whose sum is σ = 683343360. Its totient is φ = 54233280.

The previous prime is 223712893. The next prime is 223712959. The reversal of 223712940 is 49217322.

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

It is a junction number, because it is equal to n+sod(n) for n = 223712898 and 223712907.

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, 168820 + ... + 170139.

It is an arithmetic number, because the mean of its divisors is an integer number (14236320).

Almost surely, 2^223712940 is an apocalyptic number.

223712940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223712940 is an abundant number, since it is smaller than the sum of its proper divisors (459630420).

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

223712940 is a wasteful number, since it uses less digits than its factorization.

223712940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338982 (or 338980 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 223712940 is about 14957.0364711730. The cubic root of 223712940 is about 607.0582539422.

The spelling of 223712940 in words is "two hundred twenty-three million, seven hundred twelve thousand, nine hundred forty".