223732940 has 24 divisors (see below), whose sum is σ = 470223600. Its totient is φ = 89419968.

The previous prime is 223732939. The next prime is 223732991. The reversal of 223732940 is 49237322.

It is a happy number.

It is a super-4 number, since 4×223732940⁴ (a number of 35 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 223732897 and 223732906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25211 + ... + 32909.

It is an arithmetic number, because the mean of its divisors is an integer number (19592650).

Almost surely, 2^223732940 is an apocalyptic number.

223732940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223732940 is an abundant number, since it is smaller than the sum of its proper divisors (246490660).

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

223732940 is a wasteful number, since it uses less digits than its factorization.

223732940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9161 (or 9159 counting only the distinct ones).

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

The square root of 223732940 is about 14957.7050378726. The cubic root of 223732940 is about 607.0763437962.

The spelling of 223732940 in words is "two hundred twenty-three million, seven hundred thirty-two thousand, nine hundred forty".