253140634 has 8 divisors (see below), whose sum is σ = 379778580. Its totient is φ = 126547776.

The previous prime is 253140611. The next prime is 253140647. The reversal of 253140634 is 436041352.

It can be written as a sum of positive squares in 2 ways, for example, as 252905409 + 235225 = 15903^2 + 485^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15202 + ... + 27154.

Almost surely, 2^253140634 is an apocalyptic number.

253140634 is a deficient number, since it is larger than the sum of its proper divisors (126637946).

253140634 is a wasteful number, since it uses less digits than its factorization.

253140634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22544.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 253140634 is about 15910.3938983295. The cubic root of 253140634 is about 632.5875221416.

Adding to 253140634 its reverse (436041352), we get a palindrome (689181986).

The spelling of 253140634 in words is "two hundred fifty-three million, one hundred forty thousand, six hundred thirty-four".