223420140 has 96 divisors (see below), whose sum is σ = 709954560. Its totient is φ = 58304448.

The previous prime is 223420139. The next prime is 223420151. The reversal of 223420140 is 41024322.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20979 + ... + 29781.

It is an arithmetic number, because the mean of its divisors is an integer number (7395360).

Almost surely, 2^223420140 is an apocalyptic number.

223420140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223420140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (354977280).

223420140 is an abundant number, since it is smaller than the sum of its proper divisors (486534420).

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

223420140 is a wasteful number, since it uses less digits than its factorization.

223420140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8868 (or 8860 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 223420140 is about 14947.2452311454. The cubic root of 223420140 is about 606.7932949590.

Adding to 223420140 its reverse (41024322), we get a palindrome (264444462).

The spelling of 223420140 in words is "two hundred twenty-three million, four hundred twenty thousand, one hundred forty".