234778253 has 4 divisors (see below), whose sum is σ = 234918300. Its totient is φ = 234638208.

The previous prime is 234778241. The next prime is 234778267. The reversal of 234778253 is 352877432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 137992009 + 96786244 = 11747^2 + 9838^2 .

It is a cyclic number.

It is not a de Polignac number, because 234778253 - 2⁶ = 234778189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 234778253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234778213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67478 + ... + 70871.

It is an arithmetic number, because the mean of its divisors is an integer number (58729575).

Almost surely, 2^234778253 is an apocalyptic number.

It is an amenable number.

234778253 is a deficient number, since it is larger than the sum of its proper divisors (140047).

234778253 is a wasteful number, since it uses less digits than its factorization.

234778253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140046.

The product of its digits is 282240, while the sum is 41.

The square root of 234778253 is about 15322.4754201141. The cubic root of 234778253 is about 616.9064186171.

The spelling of 234778253 in words is "two hundred thirty-four million, seven hundred seventy-eight thousand, two hundred fifty-three".