223444970 has 48 divisors (see below), whose sum is σ = 466819200. Its totient is φ = 75434112.

The previous prime is 223444967. The next prime is 223444973. The reversal of 223444970 is 79444322.

It is an interprime number because it is at equal distance from previous prime (223444967) and next prime (223444973).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 223444970.

It is not an unprimeable number, because it can be changed into a prime (223444973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 372731 + ... + 373329.

It is an arithmetic number, because the mean of its divisors is an integer number (9725400).

Almost surely, 2^223444970 is an apocalyptic number.

223444970 is an abundant number, since it is smaller than the sum of its proper divisors (243374230).

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

223444970 is an equidigital number, since it uses as much as digits as its factorization.

223444970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 223444970 is about 14948.0757959010. The cubic root of 223444970 is about 606.8157729674.

The spelling of 223444970 in words is "two hundred twenty-three million, four hundred forty-four thousand, nine hundred seventy".