253240346 has 16 divisors (see below), whose sum is σ = 385324800. Its totient is φ = 124804368.

The previous prime is 253240343. The next prime is 253240349. The reversal of 253240346 is 643042352.

It is an interprime number because it is at equal distance from previous prime (253240343) and next prime (253240349).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (253240343) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 133835 + ... + 135713.

It is an arithmetic number, because the mean of its divisors is an integer number (24082800).

Almost surely, 2^253240346 is an apocalyptic number.

253240346 is a deficient number, since it is larger than the sum of its proper divisors (132084454).

253240346 is a wasteful number, since it uses less digits than its factorization.

253240346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813.

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 253240346 is about 15913.5271388841. The cubic root of 253240346 is about 632.6705699003.

Adding to 253240346 its reverse (643042352), we get a palindrome (896282698).

The spelling of 253240346 in words is "two hundred fifty-three million, two hundred forty thousand, three hundred forty-six".