223347780 has 60 divisors (see below), whose sum is σ = 700655340. Its totient is φ = 59558976.

The previous prime is 223347769. The next prime is 223347781. The reversal of 223347780 is 87743322.

It can be written as a sum of positive squares in 2 ways, for example, as 35712576 + 187635204 = 5976^2 + 13698^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (223347781) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 67315 + ... + 70554.

It is an arithmetic number, because the mean of its divisors is an integer number (11677589).

Almost surely, 2^223347780 is an apocalyptic number.

223347780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223347780 is an abundant number, since it is smaller than the sum of its proper divisors (477307560).

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

223347780 is a wasteful number, since it uses less digits than its factorization.

223347780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137890 (or 137879 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 223347780 is about 14944.8245222217. The cubic root of 223347780 is about 606.7277796719.

The spelling of 223347780 in words is "two hundred twenty-three million, three hundred forty-seven thousand, seven hundred eighty".