223704540 has 36 divisors (see below), whose sum is σ = 678570984. Its totient is φ = 59654496.

The previous prime is 223704539. The next prime is 223704541. The reversal of 223704540 is 45407322.

223704540 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (223704539) and next prime (223704541).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×223704540² = 100087442433223200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223704541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 621222 + ... + 621581.

It is an arithmetic number, because the mean of its divisors is an integer number (18849194).

Almost surely, 2^223704540 is an apocalyptic number.

223704540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223704540 is an abundant number, since it is smaller than the sum of its proper divisors (454866444).

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

223704540 is a wasteful number, since it uses less digits than its factorization.

223704540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242818 (or 1242813 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 223704540 is about 14956.7556642475. The cubic root of 223704540 is about 607.0506558820.

The spelling of 223704540 in words is "two hundred twenty-three million, seven hundred four thousand, five hundred forty".