223545140 has 48 divisors (see below), whose sum is σ = 577782912. Its totient is φ = 70747776.

The previous prime is 223545131. The next prime is 223545167. The reversal of 223545140 is 41545322.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59594 + ... + 63233.

It is an arithmetic number, because the mean of its divisors is an integer number (12037144).

Almost surely, 2^223545140 is an apocalyptic number.

223545140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223545140 is an abundant number, since it is smaller than the sum of its proper divisors (354237772).

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

223545140 is a wasteful number, since it uses less digits than its factorization.

223545140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122856 (or 122854 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 223545140 is about 14951.4260189455. The cubic root of 223545140 is about 606.9064375802.

The spelling of 223545140 in words is "two hundred twenty-three million, five hundred forty-five thousand, one hundred forty".