223671378 has 48 divisors (see below), whose sum is σ = 521864640. Its totient is φ = 63723744.

The previous prime is 223671373. The next prime is 223671407. The reversal of 223671378 is 873176322.

223671378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (223671373) 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, 128200 + ... + 129932.

It is an arithmetic number, because the mean of its divisors is an integer number (10872180).

Almost surely, 2^223671378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223671378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260932320).

223671378 is an abundant number, since it is smaller than the sum of its proper divisors (298193262).

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

223671378 is a wasteful number, since it uses less digits than its factorization.

223671378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191 (or 2184 counting only the distinct ones).

The product of its digits is 84672, while the sum is 39.

The square root of 223671378 is about 14955.6470271266. The cubic root of 223671378 is about 607.0206579679.

The spelling of 223671378 in words is "two hundred twenty-three million, six hundred seventy-one thousand, three hundred seventy-eight".