234406645 has 12 divisors (see below), whose sum is σ = 309185100. Its totient is φ = 170477120.

The previous prime is 234406643. The next prime is 234406661. The reversal of 234406645 is 546604432.

It can be written as a sum of positive squares in 2 ways, for example, as 44435556 + 189971089 = 6666^2 + 13783^2 .

It is not a de Polignac number, because 234406645 - 2¹ = 234406643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 234406645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234406643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 193120 + ... + 194329.

It is an arithmetic number, because the mean of its divisors is an integer number (25765425).

Almost surely, 2^234406645 is an apocalyptic number.

It is an amenable number.

234406645 is a deficient number, since it is larger than the sum of its proper divisors (74778455).

234406645 is a wasteful number, since it uses less digits than its factorization.

234406645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387476 (or 387465 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 234406645 is about 15310.3443788832. The cubic root of 234406645 is about 616.5807660560.

The spelling of 234406645 in words is "two hundred thirty-four million, four hundred six thousand, six hundred forty-five".