223805490 has 64 divisors (see below), whose sum is σ = 548674560. Its totient is φ = 58412480.

The previous prime is 223805473. The next prime is 223805501. The reversal of 223805490 is 94508322.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380977 + ... + 381563.

It is an arithmetic number, because the mean of its divisors is an integer number (8573040).

Almost surely, 2^223805490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223805490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274337280).

223805490 is an abundant number, since it is smaller than the sum of its proper divisors (324869070).

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

223805490 is a wasteful number, since it uses less digits than its factorization.

223805490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 223805490 is about 14960.1300128040. The cubic root of 223805490 is about 607.1419556948.

The spelling of 223805490 in words is "two hundred twenty-three million, eight hundred five thousand, four hundred ninety".