223977390 has 96 divisors (see below), whose sum is σ = 665335296. Its totient is φ = 47249280.

The previous prime is 223977389. The next prime is 223977407. The reversal of 223977390 is 93779322.

223977390 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32335 + ... + 38645.

It is an arithmetic number, because the mean of its divisors is an integer number (6930576).

Almost surely, 2^223977390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223977390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332667648).

223977390 is an abundant number, since it is smaller than the sum of its proper divisors (441357906).

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

223977390 is a wasteful number, since it uses less digits than its factorization.

223977390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6354 (or 6341 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 42.

The square root of 223977390 is about 14965.8741809491. The cubic root of 223977390 is about 607.2973599743.

The spelling of 223977390 in words is "two hundred twenty-three million, nine hundred seventy-seven thousand, three hundred ninety".