253668012 has 144 divisors (see below), whose sum is σ = 711809280. Its totient is φ = 69569280.

The previous prime is 253668011. The next prime is 253668043. The reversal of 253668012 is 210866352.

It is not an unprimeable number, because it can be changed into a prime (253668011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4158462 + ... + 4158522.

It is an arithmetic number, because the mean of its divisors is an integer number (4943120).

Almost surely, 2^253668012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253668012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355904640).

253668012 is an abundant number, since it is smaller than the sum of its proper divisors (458141268).

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

253668012 is a wasteful number, since it uses less digits than its factorization.

253668012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 253668012 is about 15926.9586550603. The cubic root of 253668012 is about 633.0265157140.

The spelling of 253668012 in words is "two hundred fifty-three million, six hundred sixty-eight thousand, twelve".