340221144 has 32 divisors (see below), whose sum is σ = 895320000. Its totient is φ = 107438112.

The previous prime is 340221131. The next prime is 340221173. The reversal of 340221144 is 441122043.

It is a self number, because there is not a number n which added to its sum of digits gives 340221144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372594 + ... + 373505.

It is an arithmetic number, because the mean of its divisors is an integer number (27978750).

Almost surely, 2^340221144 is an apocalyptic number.

It is an amenable number.

340221144 is an abundant number, since it is smaller than the sum of its proper divisors (555098856).

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

340221144 is a wasteful number, since it uses less digits than its factorization.

340221144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746127 (or 746123 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 340221144 is about 18445.0845484644. The cubic root of 340221144 is about 698.1044936239.

Adding to 340221144 its reverse (441122043), we get a palindrome (781343187).

The spelling of 340221144 in words is "three hundred forty million, two hundred twenty-one thousand, one hundred forty-four".