253487682 has 144 divisors (see below), whose sum is σ = 673800192. Its totient is φ = 68584320.

The previous prime is 253487681. The next prime is 253487687. The reversal of 253487682 is 286784352.

It is not an unprimeable number, because it can be changed into a prime (253487681) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1995903 + ... + 1996029.

It is an arithmetic number, because the mean of its divisors is an integer number (4679168).

Almost surely, 2^253487682 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253487682, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336900096).

253487682 is an abundant number, since it is smaller than the sum of its proper divisors (420312510).

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

253487682 is a wasteful number, since it uses less digits than its factorization.

253487682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 243 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 253487682 is about 15921.2964924343. The cubic root of 253487682 is about 632.8764761254.

The spelling of 253487682 in words is "two hundred fifty-three million, four hundred eighty-seven thousand, six hundred eighty-two".