223402146 has 32 divisors (see below), whose sum is σ = 490142016. Its totient is φ = 67320000.

The previous prime is 223402129. The next prime is 223402147. The reversal of 223402146 is 641204322.

It is not an unprimeable number, because it can be changed into a prime (223402147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2596 + ... + 21296.

It is an arithmetic number, because the mean of its divisors is an integer number (15316938).

Almost surely, 2^223402146 is an apocalyptic number.

223402146 is an abundant number, since it is smaller than the sum of its proper divisors (266739870).

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

223402146 is a wasteful number, since it uses less digits than its factorization.

223402146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18898.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 223402146 is about 14946.6433020929. The cubic root of 223402146 is about 606.7770043779. Note that the first 3 decimals are identical.

Adding to 223402146 its reverse (641204322), we get a palindrome (864606468).

The spelling of 223402146 in words is "two hundred twenty-three million, four hundred two thousand, one hundred forty-six".